Add a user guide page for Searching Queries

src/pages/kb/user-guide/querying/searching-queries.md

@@ -0,0 +1,52 @@
+---
+category: querying
+parent_category: user-guide
+helpscout_url: https://help.redash.io/article/153-searching-queries
+title: Search Queries
+slug: searching-queries
+toc: true
+order: 1
+---
+
+To search queries, click `Queries` in the navbar then use the Search Queries input form.
+
+# Search Queries
+
+Redash uses different search logic depending on the **Enable multi-byte** feature flag. The **Enable multi-byte** feature flag can be set on General tab under Settings page.
+
+## When "Enable multi-byte" is disabled (default)
+
+When **Enable multi-byte** is disabled, Redash uses [PostgreSQL full-text search](https://www.postgresql.org/docs/current/textsearch.html) to search queries.
+
+
+## When "Enable multi-byte" is enabled
+
+When **Enable multi-byte** is enabled, Redash uses a custom search syntax.
+
+The search logic is as follows:
+
+- Search is case-insensitive.
+- Search terms are separated by spaces.
+- Each search term is searched in the following fields:
+  - Query name
+  - Query description
+  - Query text
+- The query may contain qualifiers to specify the field to search:
+  - `name:`: Search in query name.
+  - `description:`: Search in query description.
+  - `query:`: Search in query text.
+
+### Search Examples
+| Query Name       | Description               |
+|------------------|---------------------------|
+| term | find queries containing 'term' in the query name or description |
+| term1 term2     | find queries containing both term1 and term2 |
+| "exact phrase"  | find queries containing the exact phrase |
+| query:term      | find queries containing 'term' in the query text |
+| term1 query:term2 | find queries containing 'term' in the query name/description and 'term2' in the query text |
+| query:"exact phrase" | find queries containing the exact phrase in the query text |
+
+
+
+
+