Perhaps you should try some spelling variations:
passiv » passive, passiven
passiverer » passiveerer, passivenerer, passiverwerb, passivieren, passieren, passiveer, passivener, passivelyer
passiver » passiveer, passivener, passive, passiven, passively
massiveely » massively, passively, amassively, massiveeely
massiv » massive

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 ((passiverer OR passiver) OR massiveely)) OR massiv)*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((passiv or ((passiverer OR passiver) or massiveely)) or massiv)*".