Perhaps you should try some spelling variations:
passiv » passiven, passiver
passive » passivene, passivere
passivieren » passivenieren, passiverieren, passivierung, passieren, passagieren
passivierende » passivenierende, passiverierende, passivierungde, passierende, passagierende, passivierender, aktivierende, passivierung
passivene » passivenene, passiverene, passiven, passiveand, passiverer
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 passive) OR (passivieren OR passivierende)) OR passivene)*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((passiv or massiv) or passive) or (passivieren OR passivierende)) or passivene)*".