Perhaps you should try some spelling variations:
passiv » passive, massiv, passiver
passiven » passiveen, massiven, passiveren, passive, passion
passivere » passiveere, massivere, passiverere, passiverer, passiver
passiverere » passiveerere, massiverere, passivererere, passivererre, passiverre, passiverer, passiverwerb, passivierende
passivierbare » passiveierbare, massivierbare, passiverierbare, passierbare, passivierbarkeit, aktivierbare
massiverer » massivere, massierer, passiverer

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