I can't tell if the search capability is rather basic or if I am doing it wrong.

I'm recommending lots of students read R for Data Science and they are having some difficulty searching for terms in the book.

If I enter, e.g., "join", in the search box, the set of chapters in the sidebar is reduced, presumably to those that contain the word "join". But then what? I see that if I scroll through the entire chapter the word is highlighted. Is that the best I can do? Right now I am resorting to browser-based search, so I can navigate to next match, next match, etc.