The Google search bar contains word suggestions that appear as a drop list underneath the search bar whenever you type. This feature helps users find searches faster. Some search query keywords and phrases pop up in the search bar from recently visited websites. According to the "Google Suggest" web page, some search query suggestions will appear in the search box anyway after you delete them. This will happen with popular searches.
Click the "Tools" menu on the menu bar at the top of the page.
Click "Options" in the drop list. The options dialogue box will open up on the page.
Click on the "Clear Recent History" tab of the "Options" dialogue box to display the list of settings that link to browsing history.
Make sure to check the "Form & Search History" check box. This option will delete all of the keywords and search suggestions that you typed into the search bar. They will not reappear afterward unless the keyword or phrase is popular. If you still do not want the phrase to appear on the search query, then regardless of its popularity, then you must completely disable the search bar suggestions query.
Go to the Google preferences page. You can type in "Google preferences" into the search bar to locate that part of the Google website, or you can click the link in the "Resources."
Select the "Do not provide query suggestions in the search box" button in the "Query Suggestions" section of the page. This will disable the suggestions so that no search items appear in the search bar when you type.
Navigate to the bottom of the page and click the "Save Preferences" button to save your changes. You will now go to the Google home page. You can also delete items from your search bar that came from your browsing history so that they don't reappear in the search bar.