Its largely down to luck of the draw of what people have decided to include in their post or thread
Even where people have included information if they use any non-alpha / numeric symbol
that doesnt leave a space between itself and the letters or words the search engine wont find it.
Classic case - search for titles starting with Siv
Siv Lindberg - this one shows up
http://vintage-erotica-forum.com/sho...&highlight=siv
Siv - Rare 70'ies P@ge 3 Girl - this one doesnt presumably because of the symbols touching the letters & numbers - space either side of them makes all the difference
http://www.vintage-erotica-forum.com...1&postcount=42
I only found this out when my entire ID thread refused to return searches because I had
brackets () or / to show different spellings touching the names
Then you have threads like Sara St.James which do turn up if you get it exactly right
so the v-bulletin search engine is a law unto itself
Apart from searching the most likely sections individually,using search entire threads
followed by search this thread theres not a lot of short cuts that can find things which are nobbled