When you’re in the context of the Bubble editor “you” are not “you” – “you” are THE SYSTEM. You can see what the system can see. You can run the app in the context of any user. If you hide things from the system, then “you” cannot see them. But then the system cannot, either. And so, the system (the app) cannot search them (in the normal sense).
As Josh explains (but this is pretty-much obvious),