Re: I'm not surprised...
I use DDG. My first attempt just had the quote, no quotes. That used to be a good way to get a lyric if you'd forgotten a word or two... nada.
Adding quotes provided 'no results match...'
Removing the quotes and adding Gilbert and Sullivan _now_ drops me straight into the GSarchive page you got - but the first time, just repeated the grammar checker adverts.
Wasn't it nice when search engines were deterministic?