Perhaps you should try some spelling variations:
passivene » passiven, passiveand, passiverer
passivener » passivenr, passiveandr, passivererr, passiverer, passiven, passiverwerb
passivelyer » passiverer, passiverwerb, massivelyer, passivityer, passivener
passiver » passiven, passiert
passively » massively, passivity, passiven

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 passivene) OR (passivelyer OR ((passiver OR passively) OR passivener))).
• Adding a wildcard symbol may retrieve word variants: ((passive or passivene) or (passivelyer or ((passiver or passively) or passivener)))*.