Some databases will include the full-text of articles, but others will include the 
button which links to full-text when available and if not available, gives you the option to request articles for free through Interlibrary Loan's ILLiad service.
Keep track: Keep a list of the databases and search terms you used, that way you'll know what you already tried and where you had success!
Quotation marks: “maternal mortality” searches for the phrase maternal mortality. Searching without quotation marks will search for maternal and mortality anywhere in the record..
Asterisk: steriliz* searches for sterilize, sterilizes, sterilization, etc.
Question mark: wom?n searches for women and woman
Save what you find: Use a citation management software like Zotero to keep track of articles and books you find.
Trace the Literature: Use an article’s reference list to find additional articles & use a citation database/index (like Web of Science or Google Scholar) to find a list of more recent articles that have cited a given article.
