In the DOM (not the HTML returned by the initial request) of the page, I see <yt-smartimation class="smartimation smartimation--enable-masking"> It does s

In the DOM (not the HTML returned by the initial request) of the page, I see <yt-smartimation class="smartimation smartimation--enable-masking"> It does seem odd to me to be searching the class names of DOM elements. I'm not sure if that's intended or a bug, or a red herring and the page is found for some other reason. Testing more, searching for 'wevideo "smartimation"', 'wevideo "enable-masking"', 'wevideo "enable masking"', 'wevideo "enable-masking"', 'wevideo "enablemasking"', all return no results. That seems to indicate Google isn't searching class names. However, it's possible it is searching them but due to some algorithm decided to index on "masking" but not index on the other parts. Maybe another possibility is during crawling there was a recommended video in the sidebar with "masking" in the title. I don't really know how the crawler and indexer works though, if it pays attention to those. Maybe another possibility is I'm wrong, and for video results Google does ignore quotes.