Google Tests See Results That Mention Filter Box in SERPs
https://www.seroundtable.comGoogle Search is testing a new search feature that lets you filter the search results by pages that also mention specific words. Google adds a box to the right of the search results page that lets you check off those words and then Google will highlight those results on the search results page.
Sample Query: Try searching for assisted living veteran on Mobile or Desktop. I was NOT able to trigger the result from Australia or USA.