CreativeTabSearch
This mod adds a convenient search bar above the creative mode tabs, allowing you to quickly find the desired item categories based on your query.
How it works
After installing the mod, a special input field appears at the top of the creative inventory:

When you enter text in this field, the system automatically filters and displays only those tabs that match your query:

To clear the search field, simply click the "X" button next to it:

The mod supports various languages, including Russian and Simplified Chinese:

Advanced search features
Starting from version 0.1.2, advanced search functions are available using special "@" prefixes.
@modid - search for tabs by mod identifier. Multiple values can be specified (the screenshot shows an example with one):

@itemid - search for tabs containing items with the specified identifier. Also supports multiple queries:

Important information
The mod works only on the client side. Installation on a dedicated server will cause it to crash.
For the Fabric version, Fabric API installation is required.