Perhaps you should try some spelling variations:
passiv » passive, massiv, passiven
passivere » passiveere, massivere, passivenere, passiverer, passiver
passiverere » passiveerere, massiverere, passivenerere, passivererre, passiverre, passiverer, passiverwerb, passivierende
massiven » massive, passiven, massively

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 (passivere OR passiverere))).
• Adding a wildcard symbol may retrieve word variants: (passiv or (massiven or (passivere or passiverere)))*.