Keep records of your work throughout the process. Make notes of where you searched and your results from each step.
This will keep you from having to repeat steps and will help you recall what search terms you used. If you cannot find a definitive answer, you will be also able to report on what you did find and where you looked.
Getting Started with Lexis Advance, WestlawNext and Bloomberg Law
Additional guidance on using Lexis Advance, WestlawNext and Bloomberg Law is available on their respective websites.