Perhaps you should try some spelling variations:
passiv » passiver
passively » passiverely, massively, passivity
passiven » passiveren, passion
passive » passivere
massivene » massiven, massively, massiver
massivere » massiver, massively, massiven

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