I can easily get the results I want from Yahoo! BOSS. However, for the particular data I'm trying to get, it's important that "duplicate" results be included. I know Yahoo! has them, since when I search for the query manually, it offers me a link to see these similar results.
Is there any way to request these deeper results with the Yahoo! BOSS API?
After some research, it would seem that the answer is, at present, no.
I will continue to pursue the subject here.