Yeah, it's missing some sections with more comments but there are also some entries missing inbetween the results it's giving, quite weird.
I wouldn't know how to search like you're doing (it shouldn't be that hard but I still don't), so I can't help you with that
I have never experimented with the forum search as much as I have today
Fun feature I just stumbled on, if you click on the search term at the top of the linked page (just after the word "query:") you can pull up the advanced search with the same parameters I used. And wowee, I don't know anything about search engine design but it's crazy to me that using a different catchall (say, "
Ch." instead of the "*" I used above) would generate a completely different, also incomplete return.
I tried adding a minimum number of comments too, but that only narrowed down the final number of results, not the accuracy (respectively 0 and 1 returns for 400 min comments). This makes me think the search is pulling down a list of results from the keyword search first and maxing out before generating the complete dataset, then applying the selected date/comments filters, and finally truncating down to the first two hundred (as applicable) returns to display. I'd put money on this being a "Xenforo issue"