Perhaps you should try some spelling variations:
passiv » passive, massiv, passiven
passivene » passiveene, massivene, passivenene, passiven, passiveand, passiverer
passivelyer » passiveelyer, massivelyer, passivenelyer, passively, passiverer
passiver » passiveer, massiver, passivener, passive, passiven, passively
passiverwerb » passiveerwerb, massiverwerb, passivenerwerb, passivewerb, passivenwerb, passivelywerb, passiverer

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: ((passiv OR passivene) OR (passivelyer OR (passiver OR passiverwerb))).
• Adding a wildcard symbol may retrieve word variants: ((passiv or passivene) or (passivelyer or (passiver or passiverwerb)))*.