On Google - click the arrow on the immediate right of the Google logo on the search bar. A menu will drop down, with "Clear search history" as an option.
The amount of space the search history uses is so small you would never notice.
OnePlus 5T review: Hands-on
Illustrator Andrés Lozano on his improv line work, brazen use of colours & hand sketching
iPhone X review
Comment envoyer gratuitement des gros fichiers ?