The social network stores every single term you enter in the search box. Although the privacy setting for this data is set to "only you," you may feel uncomfortable having that info hanging around. If so, it's a simple process to delete it and clear your creeper Facebook search history.
Thanks of Amy-Mae Elliott you can take a quick look at how to obtain it.
1. Go to Your Profile
Head to your Facebook profile and click the "Activity log" option at the bottom right of your cover photo.2. Activity Log
Your activity log is a list of your posts and all Facebook activity, including your search history.3. More Options
Next, click on the "More" option on the left-hand menu, under "Photos," "Likes" and "Comments."4. Search Activity
Scroll down the expanded list until you see "Search."5. Your Search History
You can now view your Facebook search history, in date order. To get rid of it, simply click "Clear Searches..."6. Clear Your History
...And then okay the pop-up message that appears.7. A Clean Search Slate
Your Facebook search history is now a clean slate!