Once you have identified search terms try putting them in quotes. This will greatly improve the specificity of your searches because it will exclude items that do not include the exact search terms you are looking for. What would the individual terms "United" "States" "of" "America" pull up instead of "United States of America"?
Generic words often introduce a lot of clutter into your search. Exact search terms can eliminate the extraneous results. This can greatly improve searching for specific people and places that may have a more generic word within the whole term (such as "Donald Trump" instead of Trump or "Salisbury University" instead of Salisbury).
After you run your search, you can take advantage of the filters on the left side of the page.
Keep special mind to the Date, Section Type, and Location.
Often the easiest way to search is a full text search. In HeinOnline, full text search uses a software known as Fastcase. Searching within collection or by citation can be more efficient, but work better once the researcher has greater familiarity with legal research.
Tip
If you want to search within law review articles or legal code, use the magnifying glass button.