Your research project may include a systematic review, scoping review, or other knowledge synthesis. These reviews have their own methodologies and normally involve systematically searching the literature in a thorough, transparent, and reproducible way. You will want to formulate a review question when conducting such reviews.
Systematic searching can also be used as a technique to search the literature in general.
Tutorials on searching
These tutorials will help you explore subject headings, subheadings, keywords, and search strategy refinement in more detail.
Ovid MEDLINE
Ovid MEDLINE part 1 - Starting your search (using subject headings)
Health Sciences Library, McMaster University. (2020, January 7). CINAHL Part 1 - Starting Your Search [Video file]. Retrieved from https://www.youtube.com/watch?v=mLL76nwhYUY