Hello @mohamed--abdel-maksoud , welcome to the forum.
I'd suggest that you maybe post a screenshot / mockup to clarify the difference to the current search box, where one can search via string for folder names. See my screenshot as an example (that I used for the word "search" is just a coincidence) which search function I mean:
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Regarding helping work on features in general or such a feature I made the experience that currently one can reach the CryptPad team regarding coding best via the chat channels.