I think you need to be more specific about what you are trying to do. When you say "filter my list..." do you mean in a database query, in a full-text search, or do you mean filter a displayed list based on some user interaction?
Thanks for your answer, I solved my problem. Sorry but I'm new in this world, and I know that my question could appear a little bit "stupid". Thank you again, next time I'll be more specific. Have a nice day! Maspero.