Perhaps you should try some spelling variations:
passiveene » passiven, passiveand, passivierende
passivelyer » passiverer, passiverwerb, massivelyer, passivityer, passivener
passiveer » passiverer, passiver, passiviert
passively » massively, passivity, passiven
passivener » passiverer, passiven, passiver

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: ((passive OR passiveene) OR (passivelyer OR ((passiveer OR passively) OR passivener))).
• Adding a wildcard symbol may retrieve word variants: ((passive or passiveene) or (passivelyer or ((passiveer or passively) or passivener)))*.