This is how I search:
1) Click "Advanced Search"
2) Click "Search Single Content Type". (The multiple content tab is for searching content in addition to posts. I never use this, since I only search for posts.)
3) Fill out as much or as little of the boxes as you like. I usually just search for a keyword (or words.) Sometimes, I search for a keyword and the user name.
For example, if I wanted to see everything Alphahawk has written about his beloved JDM rods, I could search for the keyword "JDM" and the user name "Alphahawk". The search function doesn't like short words like "JDM", so I changed the keyword to "mebaru", and I get this:
http://www.crappie.com/crappie/searc...rchid=22979424
So, if you can't find what you're looking for, try different (but similar) terms.