Facebook search results are based on your Facebook activity. Facebook search results aren't influenced by activity off Facebook.
You can search for people, posts, photos, videos, places, Pages, groups, apps, links, events and more on Facebook. Start searching with
keywords (example: Caroline wedding) and you'll see a list of results that you can filter. If you need some ideas, you can try some of these searches:
John Smith Chicago pizza
Cookie recipe Lisa
Hawaii hotel
You can also combine phrases together, or add things like locations, times, likes and interests to get more specific (example: friends who live in San Francisco).