Magical Targeting Technique for FB

Our goal here is entering one detailed targeting option in the Interest box instead of adding a bunch of them.
The point is having results that clearly determine which targeting option is acting imperfectly and needs to be eliminated.

Do this:

• Hover to the Duplicate option under your ad set and click on it.
• Make (for example) four copies of it. That’ll leave you with five ad sets.
• Open one of the four copies. Scroll down and remove your previous interests and add one targeting option, then change the ad set name accordingly.
• Do the same operation for the other three copies. Set a new name and interest for each one.

With these five ad sets, your results are now broken into five pieces.
In the long run, you'll get better results this way.