You can search either the title of the post or the entire contents of the post.
Examples:
1. Foul will show all post that contain "foul"
2. "free throw" adding quotes will show all post for specific phrase
3. "free" and "throw" adding "and" searches for both words in a post
4. "foul" or "violation" adding "or" searches for either word in a post
5. "foul" and not "technical" adding "not" removes the word from the post.