Learn more: http://www.webproeducation.org/how-to/facebook/find-people-on-facebook/
All you should find individuals on Facebook is some details about them. Of course the even more details you have, the far better opportunities you have of finding that person on Facebook.
To facebook search individuals much better, you have to authorize in to your account. This means, Facebook will use the info in your account to bring you closer to the individual you are seeking.