Perhaps you should try some spelling variations:
passiv » massiv, passiven, passiver
passiverely » massiverely, passivenerely, passivererely, passively, passiverer, passiverwerb
passive » massive, passivene, passivere
massiven » massive, passiven, massively
passionen » passione, passionnes, passion

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 massiven) OR (passiverely OR passionen)) OR passive).
• Adding a wildcard symbol may retrieve word variants: (((passiv or massiven) or (passiverely or passionen)) or passive)*.