You can search by effect name, i.e. 'agility' will show items with agility bonuses.
Viewing post in my sugestions - gui/gameplay
thats nice to know, but it dont solve problem if i dont exactly know what i have :). like i want to give my girl magical long sword...and yet i dont know what effect it have, or even if own him in first place (it was magic dager and not sword).
and yes, i know, that adding these subcategories will be big coding task (creating icons for them, coding position, adding tags to items..etc), but it wil be good for gameplay and quality of life. mayby task for big update :).