Perhaps you should try some spelling variations:
passively » massively, passive, passivity
passivelyen » massivelyen, passiveen, passivityen
passiven » passive, passion
passivee » passive, passiver, passives

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: ((passively OR (passiven OR passivelyen)) OR passivee).
• Adding a wildcard symbol may retrieve word variants: ((passively or (passiven or passivelyen)) or passivee)*.