In the top search box type: higher education OR college OR university
In the second search box type: "open education" OR free OR mooc
Note: the quotation marks force the database to search for these words together as a phrase
In the third search box type: impact OR affect
Note: Search for your terms in the AB Abstract by using the drop-down to the right of the search box
Here's what the search page will look like:
5. Click the Search button.
This is just a sample search. Look for additional vocabulary to add to your search. Try different combinations to see what search string brings back the best results for you.