Apparently the text search always searches for random titles too. So if I search for the exact sequence of the 3200 letters on the first page of the first book in the first hex, it will not find that position but randomly spit out search results with various titles. It would be nice to have an option to include/exclude title search, so whenever I post the same set of 3200 characters it would always find the same result and no other.
Other than that: Awesome job! This is probably the most fascinating web-page I found in years.