Delete your Google Search History
Login to Google Web History
Click ‘Remove all Web History’
After removing your entire web history from Google, your Web history will be set on pause mode. It means Google will not record your web search data for Google Web History. However, Google may track you web history for its own auditing purpose and to improve user experience. In this scenario your entire web history will be limited to Google.
Know what Google knows about you
To check what Google knows about you, visit your Google Dashboard.
Is Google collecting more information about you?