Perhaps you should try some spelling variations:
passiv » passive, massiv, passiven
passiviert » passiveiert, massiviert, passiveniert, passioniert, passivieren, passiert
passivener » passiveener, massivener, passivenener, passiven, passiver, passiverwerb
passiverer » passiveerer, massiverer, passivenerer, passiverwerb, passivieren, 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: (passiv OR ((passiviert OR passivener) OR (passiverer OR passiverer)))*.