Perhaps you should try some spelling variations:
passiv » massiv, passiven, passiver
passivenener » massivenener, passivenenener, passiverenener, passivierender, passiverer
passivener » massivener, passivenener, passiverener, passiverer, passiven, passiver
passivieren » massivieren, passivenieren, passiverieren, passivierende, passivierung, passieren
passive » massive, passivene, passivere

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 (passivenener OR (passivener OR passivieren))) OR passive).
• Adding a wildcard symbol may retrieve word variants: ((passiv or (passivenener or (passivener or passivieren))) or passive)*.