Perhaps you should try some spelling variations:
passiv » passiver
passiven » passiveren, passion
passive » passivere
passivere » passiverere, passiverer, passiver, massivere
massiv » massive
passione » passion, passions, passionate
passionen » passionn, passionsn, passionaten, passionnes, passion, passions

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