The key database for education literature is ERIC (linked below) While you can use any keywords that describe the topic, using the terms that ERIC uses to describe topics (called descriptors) can make a big difference in finding useful articles and other publications. These terms can be identified using the ERIC Thesaurus, found inside the ERIC database.
General:
For classroom mangement, consider searching:
For misbehavior, consider searching:
For legal issues, consider searching:
For culturally responsive teaching, consider searching: