You should scroll down to find the Browsing history section and then click the button VIEW AND CLEAR BROWSING HISTORY. Then you can view your activity history which is categorized by 6 types, including Apps and services, Voice, Search, Browse, Media, and Location.

Scroll down a bit to the "Search History" section, and then click "View And Clear Search History" button. This opens the "Activity History" tab of your dashboard, and puts the focus on your past searches. If what you want to do is clear your entire search history, you can just click the "Clear Activity" link at the top right of your search list.

The easiest way to see your search history is by visiting Bing itself. From the homepage, click the hamburger menu in the top-right. Click the “Search history” link towards the top of the drop-down which appears. Bing’s Search History interface is simple but functional. Your search history is broken down by date.

This is what to do: Navigate to the Bing homepage. Click on the four horizontal lines in the top right-hand corner. Click 'search history' once in the drop-down menu. On the next page, click 'clear search history' on the right-hand side. Your browsing history should now be deleted and your cache clear!