Perhaps you should try some spelling variations:
passiv » massiv, passiven
passive » massive, passivene
passiver » massiver, passivener, passiven, passively, passiert
passiverere » massiverere, passivenerere, passivenere, passivelyere, passiertere, passiverer, passiverwerb, passivierende
massivere » massiver, massively, massiven

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 (passive OR (passiver OR passiverere))) OR (massive OR massivere)).
• Adding a wildcard symbol may retrieve word variants: ((passiv or (passive or (passiver or passiverere))) or (massive or massivere))*.