This page illustrates the use of AND, OR, and NOT that are used to connect words in the CINAHL database.
Boolean terms - AND, OR, NOT
Most web resources and databases understand Boolean terms. Check the help screens to see if they are accepted.
Advanced Search Techniques - Truncation and Phrase Searching
In databases such as CINAHL, you can also use truncation and phrase searching in addition to Boolean operators to help locate the information you need.
Truncation searching involves shortening a word down to its base in order to pick up a variety of the word's potential endings and then adding an asterisk. For example, searching for nurs* (the asterisk is what tells the database this is a truncation search) will return results such as nurse, nursed, nurses, or nursing. This can be used for the root of any word.
Phrase searching uses quotation marks around two or more words to tell the database to lock those words together and only return results with those words in that order. For example, searching for "advanced practice nursing" would only return citations with those three words in that order, whereas a search for advanced practice nursing without quotation marks would return results with those words anywhere in the citation, in any order. Phrase searching is helpful when you know that you want an exact phrase to be returned in all of your results.
Search samples and suggestions (these combine the use of Boolean operators and phrase/truncation searching):