A few possibilities: - We only use abstracts for now. Have to make sure you ask for something present there. - Did you ask for a scientific topic? (Sometimes people ask for papers by a specific author, journal, etc. The system isn't engineered to efficiently find that).

Regarding citations: we use them, but only for figuring out which papers to look at next in the iterative discovery process, not for choosing what to rank higher or lower at the end (unless you explicitly ask for citations). It's ranking based on topic match.

If you're comfortable, posting the report URLs here can let us debug.