Perhaps you should try some spelling variations:
passiv » passive, massiv, passiver
passivere » passiveere, massivere, passiverere, passiver, passivieren
passiven » passiveen, massiven, passiveren, passive, passion
passiverer » passiveerer, massiverer, passivererer, passiverr, passivierenr, passiverwerb, passivieren, 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 passivere) OR passiven) OR passiverer).
• Adding a wildcard symbol may retrieve word variants: (((passiv or passivere) or passiven) or passiverer)*.