Google is known to keep a record of every search you make on the web. According to the company, you can delete previous searches, browsing history, or other activities from your Google Account.
When using products and services of Google, the company maintains data in your account, such as when and how you use certain features. The company though maintains this data, even if you delete your activity.
For example, if you visit the My Activity page and delete a Google search, the company will know that you searched for something (the place and time) but not the term search. Οπότε αυτό που θα διαγραφεί τελικά θα είναι μόνο οι terms of the searches you have made.