Hello,
We have noticed that the TargetingIdeaService doesn't return results for some keywords, for example for a set of 13,607 keywords we don't get results for 3,304 of them. I reduced the request to a single keyword ("estee lauder") that doesn't return results from the API, but that does return in the UI Keyword Planner.
I can send the SOAP requests if needed.
Regards,
Paco