Would it be possible to enable some search features that seem to be available on other message boards, such as "AND" or "+" to search for all of the terms and force inclusion of the term, "exact phrase" to get the exact phrase? For example, a search for "BD exhaust brake" returns irrelevant results because "BD" is rejected and there is no way to keep it in the search string.

 

Try using symbols like * for wildcard letters to get around the letter limit.