In the latest version of Vbulletin it made it difficult to search for 3 letter terms. The fix is to mess with a few database settings and I really don't want to corrupt automags.org database.
An easy way to search for terms such as SFL, mag, PTP, etc. is to add an asterisk to the end of the term. Using a truncation operator.
For example, searching the term "TAC*" It will retrieve entries for all posts containing the words: Tac One, Tac-One, TacOne.
Searching AO with no asterisk: "TAC"
Searching AO with asterisk: "TAC*"
We went from 0 pages to 13 pages worth of posts with some form of the word "TAC" in it. Not bad!