I think you can just type in what you're searching for in the box and instead of hitting Enter or clicking the Search button, click the search term at the bottom below all of the suggested pages that pop up. Then on the next page you can click on Posts, People, Pages, etc. to find what you're looking for. I hope that helps. If you're still not sure I can try and explain it better.

Try to start using the Graph search in a detail method.
Not by just searching your specific keyword,
and always filter your search through the option available.
Hope it helps.