Perhaps you should try some spelling variations:
passiv » passive, passiven, passiver
passivene » passiveene, passivenene, passiverene, passiven, passiveand, passiverer
passivierende » passiveierende, passivenierende, passiverierende, passivierender, passivieren, aktivierende
passivierung » passiveierung, passivenierung, passiverierung, aktivierung
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 passivene) OR (passivierende OR passivierung)).
• Adding a wildcard symbol may retrieve word variants: (((passiv or massiv) or passivene) or (passivierende or passivierung))*.