How do I open a google enquiry over any screen?

Call up the annotation tool bar illustration
1.
Call up the annotation tool bar
Press the text recognition button illustration
2.
Press the text recognition button
Write what you want to google and click the small arrow above illustration
3.
Write what you want to google and click the small arrow above
A half-page browser will appear showing your search results illustration
4.
A half-page browser will appear showing your search results