**Symbols are not universal – check database help as needed
Caveat: Turns off auto mapping and auto explode in PubMed
Use N# to search for words within a given number of words (#) from each other
E.g. reimbursement N/2 insurance (searches for reimbursement within 2 words of insurance)
tax N/3 reform (tax within 3 words of reform)
Use W# or PRE/n if you want the words in a specific order
Not enough (or any) articles on your topic?
Here are some tips to find more results:
e.g. ethics OR morals OR principles
Too many results? Or results not focused on your topic?