Let’s check out the steps to smoothly clear Facebook search history on your computer. To know how to clear Facebook messenger search history then start by opening browser and proceed to Facebook.com. Now, log-in by entering the details and choose menu in the top right of Facebook on your profile page. From the available options, choose settings and privacy and then activity log. Here, click to filter in the top left of activity log. Scroll to the search history and choose the circle to choose and save change changes. Hover over the search from left menu that you want to delete. Lastly, choose menu and then tap to delete.