Some users have noticed that the minimum word length to search is 4 characters. Many forums have this limit. So how does search on WNS or GPS or other 2 or 3 character words?
Simple. Just append an asterisk(s) to your search phrase to pad it to 4 characters. Many programs use the asterisk as a wild card. So you would enter wns* or gps* and click search.
The forum search does not appear to be case sensitive either.