Once you have your keywords, you can use Boolean Operators to create an effective search strategy.
Combine main concepts with AND to narrow your search and produce fewer results.
Combine synonyms with OR to expand your results.
You can use an asterisk (*) at the beginning, middle, or end of a word to create a wildcard substitute for any other letter, letters, or perhaps, no letters at all.
You can use quotation marks (" ") around two or more words to make sure your results show those words together in that order.
If you are looking for research studies you can pair your keywords and phrases with the word method*. This searches for Methods, Materials and Methods, and Methodology; which are specific sections in a research study that briefly describes how the research was conducted.
You can pair your keywords and phrases with the terms qualitative research or quantitative research to find an article that contains qualitative or quantitative data.