You will be doing at least 2 searches in the nursing database, CINAHL.
SKIM through the results, looking for topics that sound interesting. When you find an article that looks interesting or promising, look at the words used to describe it. These will help you come up with the search terms to use for your NEXT CINAHL search.
The main search screen in CINAHL lets you focus your search to specific dates:
If you've already hit the search button, you can also narrow the date on the search results page. Find the Publication Date range under Limit To and enter the earliest year you are looking for.