Connecting the alternative terms with OR tells the database to search for any of these terms.
Connecting the alternative terms with AND tells the database to search for ALL those terms.
Using the asterisk (*) truncates the search. The database will search for the part of the word you typed before the asterisk, along with any possible endings of the word. Using statistic* tells the database to search for statistics, statistical, etc.
Some methodologies are rarely used for certain research topics. You may need to broaden your search topic to find a study that uses your methodology.
Many articles and dissertations will include methodology terms in the abstract or title. To make sure that you have an example of your methodology, be sure to look at the methodology section in the full text. This will provide detailed information about the methodology used.
adapted from: Walden University. Q. How do I find a quantitative article? http://academicanswers.waldenu.edu/faq/72857