Advanced Search is your friend: Click on Advanced Search, so you can search multiple fields at once. If you are searching for Nuclear Magnetic Resonance, you also need to include "forensics" as a search term.
Use quotation marks for phrases like "Questioned Documents"
Find Reviews (NOT book reviews): Reviews are a summary of the current scholarship on a given topic. They easier to read than a lot of peer-reviewed articles, AND they point you to sources (like case studies). Many reviews include the words "A Review" in the topic, so you can add a "title" search for "Review" as shown:
