Not sure if this is a Xenforo limitation, but can the minimum search term length be removed, or at least reduced to three characters? Everyone loves their TLAs, and the current limit prevents you from searching for such terms as: SFX, ITX, '960 Evo', '1TB m.2', and so on.
cool T-shirt.
If I search for "what games are you playing", I expect the thread "What games are you playing?" To be the first result, but it isn't.
I've been using the search function a lot more recently and the relevancy issue is starting to bug me. There is a $50 add-on to Xenforo for Elasticsearch that should dramatically improve the search results.
So sometime next year if finances look good and I can get it running on the server we'll implement it.