If I take the quote: "At the beginning of this section, we posed the question: can we show that our two definitions of the nearby-relation are equivalent?"
Searching on google lead to 2 dead link, and another website republishing the book as pdf.
Others search engines give me the link of the page I got the quote from, as the first result.
That's not a sign that quote search doesn't work. In fact, the opposite. The pages you get all appear to have that really long quoted phrase. Instead, it's a sign we don't have one particular page with that quote indexed. Certainly better if we did have that page included in our index, of course. I'll pass it on.
But a false negative (not getting a page that has the phrase) isn't the same as a false positive (getting a page that doesn't have the phrase), which is what the GP is talking about.
If I take the quote: "At the beginning of this section, we posed the question: can we show that our two definitions of the nearby-relation are equivalent?"
Searching on google lead to 2 dead link, and another website republishing the book as pdf.
Others search engines give me the link of the page I got the quote from, as the first result.