Perhaps you should try some spelling variations:
passiv » passive, passiven, passiver
passivieren » passiveieren, passivenieren, passiverieren, passivierende, passivierung, passieren
passiveeeer » passiveeeeer, passiveneeeer, passivereeeer, passiverwerb
passiveneeeer » passiveeneeeer, passiveneneeeer, passivereneeeer
passiverer » passiveerer, passivenerer, passivererer, passiverwerb, passiver, passieren
massiv » massive

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 massiv) OR passivieren) OR ((passiveeeer OR passiveneeeer) OR passiverer)).
• Adding a wildcard symbol may retrieve word variants: (((passiv or massiv) or passivieren) or ((passiveeeer or passiveneeeer) or passiverer))*.