> When you use Google products and services, we keep some data with your Google Account, like when and how you use certain features. We keep this data even if you delete activity or other items.
> For example, if you go to My Activity and delete a search you did on Google, we'll still know that you did a search, but not what you searched for. What you searched for will no longer be stored with your account.
> We keep this data as long as it's relevant to meet uses like those above. If you delete your account, we remove this data from it.
https://support.google.com/accounts/answer/465
> When you use Google products and services, we keep some data with your Google Account, like when and how you use certain features. We keep this data even if you delete activity or other items.
> For example, if you go to My Activity and delete a search you did on Google, we'll still know that you did a search, but not what you searched for. What you searched for will no longer be stored with your account.
> We keep this data as long as it's relevant to meet uses like those above. If you delete your account, we remove this data from it.