Perhaps you should try some spelling variations:
passiv » massiv, passiven, passiver
passivenere » massivenere, passivenenere, passiverenere, passiverer, passiverwerb
passively » massively, passivenely, passiverely, passivity, passiven
passive » massive, passivene, passivere
massiven » massive, passiven, massively
massiver » massive, passiver, massively

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