Perhaps you should try some spelling variations:
passiv » massiv, passiver
passivenere » massivenere, passiverenere, passiverer, passiverwerb, passionere
passiven » massiven, passiveren, passion
passively » massively, passiverely, passivity
passive » massive, passivere
massiver » massive, massiven, passiver

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