We generally clear our browser history after certain time interval but only some people know that google also save history of search queriesdone by you whenever you logged in your google account. So if you want to clear this web history then follow these steps:
1. At first Open www. Google.com
2. Log in your google account.
3. In the top right corner of the screen click Settingsand then Google Account settings
4. Under My products click Web history as shown in the picture to the right.
5. In the Web history click the Remove items link in the left column.
6. Choose what you wish to clear or if you wish to clear all search queries click the clear entire Web History.
In this way you have cleared your Google online web history.