delete search history in the bar using google search
Click History History. On the left, click Clear browsing data. A box will appear. From the drop-down menu, select how much history you want to delete. To clear everything, select All time. Check the boxes for the info you want Chrome to clear, including “browsing history." Learn more about the types of browsing data you can delete; Click How do I clear my address bar history? Oct 07, 2019 How To Clear Google Search Bar History on Android
Delete your activity - Android - Google Search Help
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