This document provides instructions for clearing Facebook search history from both desktop and mobile. On desktop, users can click the search bar and select "Edit" to see recent searches, then click "Clear Searches" to delete all history. Alternatively, they can access search history via the Activity Log and click "Clear Searches" there. On mobile, users tap the search bar, then "Edit" and "Clear searches" to delete all items.

1. Clear Facebook
Search History
Facebook search is a great way to find people, pages, groups, posts,
etc. FB uses search history to improve your search results. If you don’t
want to see your past search, clear Facebook search history from
desktop or mobile app.

2. How to clear Facebook
Search History?
YOU CAN FIND SEARCH HISTORY ON THE SEARCH BOX OR ON THE ACTIVITY
LOG.

3. Delete Facebook search history on
desktop
 Go to Facebook.com and login with your account.
 Click on the search bar on the Facebook homepage.

4.  A drop-down list of recent searches will appear on your
screen, click on the Edit option at the top right corner of the
drop-down menu.
 The dropdown list will not appear if you don’t have any
search history.
 You can also delete individual search item by clicking the
cross button just beside the search entry.

5.  Select the option Clear Searches on the Search
history page.

6.  Choose the option Clear Searches to confirm that you want to
clear all the Facebook search history on the pop-up alert.
Now you’ve successfully deleted FB search history.

7. Alternatively
 Click on the drop-down (▼) icon from the FB home page.

8.  Select the option Activity Log from the drop-down menu.

9.  Click MORE option from the left sidebar and open Search History.
 Hit the option Clear Searches to delete all Facebook search
history. If you want to remove a particular history only then select
the edit icon just beside lock icon and click on Delete.

10. Clear search history from the mobile
app
 Open the Facebook app from your phone menu.
 Tap on the search bar which is right beside Messenger icon.

11.  You will see a list of your recent searches, tap on
the EDIT option which is located at the top right corner of the
screen.

12.  Tap on Clear searches to delete all search items. If you want
to delete individual search history, then tap on the cross icon
which is placed just at the right to the search name.

13. Source:
https://howtodelete.org/clear-
facebook-search-history/