Basically, the categories have some overlap. I think all the existing categories should have 5 or 6 overarching categories (this could be "items and blocks" "world generation" "mobs and entities" etc) and then within those large categories could be smaller distinctions.
For instance, you could go into items and then see "tools & weapons" "food" "redstone" and then be able to be much more specific about what you're looking for.
Also the drop down where you pick the version... why is forge and paper within the same drop down? They should be in their own separate drop down.