Perhaps you should try some spelling variations:
passiv » passive, passiven, passiver
passiveren » passiveeren, passiveneren, passivereren, passivieren, passieren, passiverer, passiverern, passivern, massiveren
passivere » passiveere, passivenere, passiverere, passiverer, passiver, massivere
passiveere » passiveeere, passiveneere, passivereere, passivieren, passiver, massivere
massiv » massive
massivieren » massiveieren, passivieren, massivere, massigeren

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