[mda]

Did you try your own sentence "floating point operations that can produce NaN." "Making nan"is a very tricky query, because it has no context that is related to floating point. I think it is not fair to expect anything else. If you give a slight context like "operations that make nan" you will get results.

[barbecue_sauce]

Yeah, "ways to make nan", even being familiar with the domain, is an extremely unintuitive way to phrase that query.