First, break your question down into key concepts
Although PubMed tries to be as user-friendly as Google, you cannot simply ask your question.
You need to limit your keywords to the main concepts of your question.
For example, if your question is:
"What evidence-based interventions are most effective in reducing falls among elderly patients
in acute care settings?"
Then our key concepts could be:
-
Elderly
-
Falls
-
Acute Care Settings
-
Interventions
NOTE: Remember that using PICO, QI, or SOS to formulate your question can help you identify your main concepts.