Keyword Filter Tip:
Sometimes simple keywords pick up longer words. If you add a keyword filter for “Elon”, it will also filter posts with the word "belong" or "felony".

Solution:
Regular Expressions. Go to your filters tab by holding down on one of the last 3 tab buttons. Add Keyword and enter \(space)yourkeyword(space). You should also see a new "Regex" option appear when you hit that backslash. Turn that on. Test your results by scrolling down and checking "Matching Posts”.