Diane Bianchi said
9 months, 3 weeks ago: Hi @claudiapoeclk. I think it does work with a search term. I checked it out. I started typing “social” and it came up with two sponsored ads for games, which didn’t even have the word “social” in the name of the game or the ad! Maybe it’s categorized under “social”. I’m not sure what a “Top Hit” is, but my guess would be that it is the page that gets the most hits when searches are done. By the way, Social Media Examiner came up as “Top Hit” when I typed “Social”! 
@devanianjali, this is not advertising a post. It is an ad that shows up when you use the search bar in Facebook, kind of like when you do search on Google and when the results come up you have sponsored links at the top.