diff --git a/modules/docs/src/Volo.Docs.Domain/Volo/Docs/Documents/FullSearch/Elastic/ElasticDocumentFullSearch.cs b/modules/docs/src/Volo.Docs.Domain/Volo/Docs/Documents/FullSearch/Elastic/ElasticDocumentFullSearch.cs
index b525aa65d9..8e0a51324a 100644
--- a/modules/docs/src/Volo.Docs.Domain/Volo/Docs/Documents/FullSearch/Elastic/ElasticDocumentFullSearch.cs
+++ b/modules/docs/src/Volo.Docs.Domain/Volo/Docs/Documents/FullSearch/Elastic/ElasticDocumentFullSearch.cs
@@ -26,7 +26,7 @@ namespace Volo.Docs.Documents.FullSearch.Elastic
             _options = options.Value;
         }
 
-        public async Task CreateIndexIfNeededAsync(CancellationToken cancellationToken = default)
+        public virtual async Task CreateIndexIfNeededAsync(CancellationToken cancellationToken = default)
         {
             ValidateElasticSearchEnabled();
 
@@ -54,7 +54,7 @@ namespace Volo.Docs.Documents.FullSearch.Elastic
             }
         }
 
-        public async Task AddOrUpdateAsync(Document document, CancellationToken cancellationToken = default)
+        public virtual async Task AddOrUpdateAsync(Document document, CancellationToken cancellationToken = default)
         {
             ValidateElasticSearchEnabled();
 
@@ -67,13 +67,13 @@ namespace Volo.Docs.Documents.FullSearch.Elastic
 
             var esDocument = new EsDocument
             {
-                Id = document.Id,
-                ProjectId = document.ProjectId,
+                Id = NormalizeField(document.Id),
+                ProjectId = NormalizeField(document.ProjectId),
                 Name = document.Name,
                 FileName = document.FileName,
                 Content = document.Content,
-                LanguageCode = ConvertLanguageCode(document.LanguageCode),
-                Version = ConvertVersion(document.Version)
+                LanguageCode = NormalizeField(document.LanguageCode),
+                Version = NormalizeField(document.Version)
             };
 
             if (!existsResponse.Exists)
@@ -89,7 +89,7 @@ namespace Volo.Docs.Documents.FullSearch.Elastic
 
         }
 
-        public async Task DeleteAsync(Guid id, CancellationToken cancellationToken = default)
+        public virtual async Task DeleteAsync(Guid id, CancellationToken cancellationToken = default)
         {
             ValidateElasticSearchEnabled();
 
@@ -97,7 +97,7 @@ namespace Volo.Docs.Documents.FullSearch.Elastic
                 .DeleteAsync(DocumentPath<Document>.Id(id), x => x.Index(_options.IndexName), cancellationToken));
         }
 
-        public async Task DeleteAllAsync(CancellationToken cancellationToken = default)
+        public virtual async Task DeleteAllAsync(CancellationToken cancellationToken = default)
         {
             ValidateElasticSearchEnabled();
 
@@ -110,7 +110,7 @@ namespace Volo.Docs.Documents.FullSearch.Elastic
                 .DeleteByQueryAsync(request, cancellationToken));
         }
 
-        public async Task DeleteAllByProjectIdAsync(Guid projectId, CancellationToken cancellationToken = default)
+        public virtual async Task DeleteAllByProjectIdAsync(Guid projectId, CancellationToken cancellationToken = default)
         {
             ValidateElasticSearchEnabled();
 
@@ -127,7 +127,7 @@ namespace Volo.Docs.Documents.FullSearch.Elastic
                                 new TermQuery
                                 {
                                     Field = "projectId",
-                                    Value = projectId
+                                    Value = NormalizeField(projectId)
                                 }
                             }
                         }
@@ -139,7 +139,7 @@ namespace Volo.Docs.Documents.FullSearch.Elastic
                 .DeleteByQueryAsync(request, cancellationToken));
         }
 
-        public async Task<List<EsDocument>> SearchAsync(string context, Guid projectId, string languageCode,
+        public virtual async Task<List<EsDocument>> SearchAsync(string context, Guid projectId, string languageCode,
             string version, int? skipCount = null, int? maxResultCount = null,
             CancellationToken cancellationToken = default)
         {
@@ -168,17 +168,17 @@ namespace Volo.Docs.Documents.FullSearch.Elastic
                                 new TermQuery
                                 {
                                     Field = "projectId",
-                                    Value = projectId
+                                    Value = NormalizeField(projectId)
                                 },
                                 new TermQuery
                                 {
                                     Field = "version",
-                                    Value = ConvertVersion(version)
+                                    Value = NormalizeField(version)
                                 },
                                 new TermQuery
                                 {
                                     Field = "languageCode",
-                                    Value = ConvertLanguageCode(languageCode)
+                                    Value = NormalizeField(languageCode)
                                 }
                             }
                         }
@@ -216,7 +216,7 @@ namespace Volo.Docs.Documents.FullSearch.Elastic
             return docs;
         }
 
-        protected void HandleError(IElasticsearchResponse response)
+        protected virtual void HandleError(IElasticsearchResponse response)
         {
             if (!response.ApiCall.Success)
             {
@@ -225,7 +225,7 @@ namespace Volo.Docs.Documents.FullSearch.Elastic
             }
         }
 
-        protected void ValidateElasticSearchEnabled()
+        protected virtual void ValidateElasticSearchEnabled()
         {
             if (!_options.Enable)
             {
@@ -233,14 +233,14 @@ namespace Volo.Docs.Documents.FullSearch.Elastic
             }
         }
 
-        protected string ConvertLanguageCode(string languageCode)
+        protected virtual string NormalizeField(Guid field)
         {
-            return languageCode.Replace("-", "").ToLower();
+            return NormalizeField(field.ToString("N"));
         }
 
-        protected string ConvertVersion(string version)
+        protected virtual string NormalizeField(string field)
         {
-            return version.Replace("-", "").ToLower();
+            return field.Replace("-", "").ToLower();
         }
     }
 }
diff --git a/modules/docs/src/Volo.Docs.Domain/Volo/Docs/Documents/FullSearch/Elastic/EsDocument.cs b/modules/docs/src/Volo.Docs.Domain/Volo/Docs/Documents/FullSearch/Elastic/EsDocument.cs
index df78744361..be930d0ee1 100644
--- a/modules/docs/src/Volo.Docs.Domain/Volo/Docs/Documents/FullSearch/Elastic/EsDocument.cs
+++ b/modules/docs/src/Volo.Docs.Domain/Volo/Docs/Documents/FullSearch/Elastic/EsDocument.cs
@@ -10,9 +10,9 @@ namespace Volo.Docs.Documents.FullSearch.Elastic
             Highlight = new List<string>();
         }
 
-        public Guid Id { get; set; }
+        public string Id { get; set; }
 
-        public Guid ProjectId { get; set; }
+        public string ProjectId { get; set; }
 
         public string Name { get; set; }
 
@@ -26,4 +26,4 @@ namespace Volo.Docs.Documents.FullSearch.Elastic
 
         public List<string> Highlight { get; set; }
     }
-}
\ No newline at end of file
+}