Filter Constraint

In many different campaigns I create a landing page with the same name "LP - L320". I would like to be able to create a report that says:

Filled out Form -> Add Constraint -> Web Page -> I'd like there to be an option when you dropdown the web page that it should say "contains". Currently the only options in the drop down are is and is not. How can I add "contains"?

So that every time I create a new landing page I shouldn't have to add the landing page to the report.