This may be a feature request, or a bug report, not sure. I doubt it's relevant for many sets.
I have a request to adjust the searching to ignore punctuation. I think it's pretty normal (or at least Google does it, so that's probably what everyone expects) to ignore punctuation in both the search term and the term to match.
I'd expect "helms deep" to find the relevant sets, but you have to type in "helm's deep" (I notice that case gets ignored).
Thanks for listening.