If your that worried about it use another search engine.
Using another search engine only means that they'll get your information first
instead of Google but eventually, Google will also have that information.
In today's world, there really isn't any way to remain in a closed cocoon.
Ask any politician or any one else in the spotlight.
Nothing is secret and no matter how isolated you try to keep your personal things,
they will eventually surface.
If you start clean, stay clean, all they'll ever find is .......