Already had this done to me, for a job interview. They searched everything they could think of. I laughed when they told me, 'You don't exist.' We can't find a trace of you anywhere. And they are right. They couldn't.
I am a paranoid freak, and I never use my real name, my real phone number, or my real email, online. Even if they did ever get a line on me, it would only be partial. I have at least 6 online names that I go by. Good luck with your 'searching'. All you will find is whatever I want you to find.