These last few quick tips are focused more on PubMed. One fantastic feature is "Similar Articles." These are displayed next to the abstract view of an article and are based on MeSH terms.

When you have identified a great article for your research topic, PubMed provides a list of articles similar to the one you are looking at.

Click on the article you are interested in. On the right side of the screen is a Similar articles section. Click the See all...link to get the full list of similar articles. These are sorted by relevance. Sometimes an article that's relevant may be further down.

Let's say you found an article about therapy dogs for nursing students while searching for ways to help ease stress of nursing school, so you click "Similar Articles." Maybe some of the articles toward the top are more about therapy dogs, but not nursing students. Keep scrolling down to see more, including interventions on nursing students that aren't therapy dogs.