Perhaps you should try some spelling variations:
passiv » passive, passiven, passiver
passivereely » passiveereely, passivenereely, passiverereely, passively, passiverer
passiverwerb » passiveerwerb, passivenerwerb, passivererwerb, passiverer
massively » massive, massiveely
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 ((passivereely OR passiverwerb) OR massively)) OR massiv)*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((passiv or ((passivereely OR passiverwerb) or massively)) or massiv)*".