Perhaps you should try some spelling variations:
passiv » passiver
passiven » passiveren, passion
passive » passivere
massiv » massive
massivener » massiveener, massiven, massiver, massivere
passioner » passione, passionen, massioner

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 massiv) OR passiven) OR (massivener OR passioner)) OR passive).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((passiv OR massiv) or passiven) or (massivener or passioner)) or passive)".
• Adding a wildcard symbol may retrieve word variants: ((((passiv OR massiv) or passiven) or (massivener or passioner)) or passive)*.