Perhaps you should try some spelling variations:
massiv » massive
massivere » massiveere, massiver, massive, massively
passiveer » passiverer, passiver, passive
passiviert » passioniert, passivieren, passiert
passively » massively, passive, passivity

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: (massiv OR ((passiveer OR passiviert) OR (massivere OR passively)))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(massiv or ((passiveer OR passiviert) or (massivere or passively)))*".