diff --git a/en/identity-server/7.0.0/mkdocs.yml b/en/identity-server/7.0.0/mkdocs.yml
index def6dde95a..44311d0eac 100644
--- a/en/identity-server/7.0.0/mkdocs.yml
+++ b/en/identity-server/7.0.0/mkdocs.yml
@@ -24,7 +24,12 @@ extra:
   is_version: 7.0.0
 
 plugins:
-  - search
+  - search:
+      indexing: "full"
+      separator: "[^\\w._]+"
+      lang: ['en']
+      prebuild_index: true
+      ngram_length: 3
   - markdownextradata: {}
   - include-markdown
   - redirects:
diff --git a/en/identity-server/next/mkdocs.yml b/en/identity-server/next/mkdocs.yml
index 04dea9b074..8123b53b25 100644
--- a/en/identity-server/next/mkdocs.yml
+++ b/en/identity-server/next/mkdocs.yml
@@ -24,7 +24,12 @@ extra:
   is_version: next
 
 plugins:
-  - search
+  - search:
+      indexing: "full"
+      separator: "[^\\w._]+"
+      lang: ['en']
+      prebuild_index: true
+      ngram_length: 3
   - markdownextradata: {}
   - include-markdown
   - redirects: