How do I force Force Touch Dictionary lookups to acknowledge foreign language grammar?

When applying force touch on a word, no matter how the word is conjugated, it is looked up in dictionary form in the Dictionary app. For example, when I look up "observing", it looks up "observe," as it should. With Japanese, it does this as well, though less successfully. However, with Korean, it doesn't do this at all. As a Korean learner, this is annoying. Is there a fix to this?