I’ve often found stuff when there is a much bigger page range, e.g. in normal search results
[ATTACH=full]304753[/ATTACH]
You are correct in pointing out the difficulty in guessing what's on a page you cannot see, and if looking for a date range you'd maybe be better off using advanced search except it doesn't have Find all Threads by... (maybe you can but I just haven't found it yet) NB: I've edited title to include that as it is just as much, or even more of, an issue.
So my main point is that a result as in the above image would be way better in this case than merely showing 10 pages at a time and you have to keep clicking on Older results after clicking on page 10 just in order to to get more pages, and then only 10 at a time. And even then pages 21 - 30 are shown as the 3rd lot of 1 - 10
This is even if you realise how it is supposed to work.
So even though it may be as designed, I still think the awkwardness and complexity of user interface warrants it being a bug. IMO.
