The refusal to search for a short word is really annoying, often rendering the search function virtually useless.
For instance, I'm having problems with a Trane EEV. So I ran a search on "Trane EEV"
What do I get? "The following words are either very common, too long, or too short and were not included in your search: eev" followed by the first 500 threads with just "Trane" included.
Yay - just what I needed!
Useless and a waste of time.