It's a really interesting project. And I am sure it's really hard. I was curious how many times some common textbooks were mentioned but didn't find them via

It's a really interesting project. And I am sure it's really hard. I was curious how many times some common textbooks were mentioned but didn't find them via the search, which could be user error. But to give a specific example. None of the books in this comment thread were found: https://news.ycombinator.com/item?id=19893447 https://news.ycombinator.com/item?id=19893447 Comment text like this: "CMOS VLSI Design: A Circuits and Systems Perspective (4th Edition)" by Weste and Harris should've been caught, right?