Perhaps you should try some spelling variations:
passiv » massiv, passiven, passiver
passivenere » massivenere, passivenenere, passiverenere, passiverer, passiverwerb
passive » massive, passivene, passivere
massiven » massive, passiven, massively
massiver » massive, passiver, massively

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 massiven) OR ((passivenere OR massiver) OR (passive OR massiven))).
• Adding a wildcard symbol may retrieve word variants: ((passiv or massiven) or ((passivenere or massiver) or (passive or massiven)))*.