Fwiw, I've had good luck creating routines to cover wordings that should work but don't. One of the available actions is a (single) custom command, so you can use a one-action routine as a map from this wording to that wording.

So, for example, on my system “start my car” actually maps to “tell blue link to start my Ioniq and set the temperature to 72” because the skill is godawful picky about getting all of that.