Yes, you can get the keywords for your top landing pages, but not from Google Analytics — they come from the Google Search Console.
This free workbook uses the Analytics Edge Connector for Google Analytics to grab your top landing pages, then the Connector for Google Search (Webmaster Tools) grabs the keywords used to see each page in search results; clicks, impressions and average position! All you need to do is Refresh!
Requires: Analytics Edge Core Add-in (free license) with Google Search connector and Google Analytics connector
Download the workbook: GoogleSearch-KeywordsForTopLandingPages-2-0.xlsx