Perhaps you should try some spelling variations:
passiv » massiv, passiven, passiver
passive » massive, passivene, passivere
passiveren » massiveren, passiveneren, passivereren, passivieren, passiven, passiver
passiverer » massiverer, passivenerer, passivererer, passiverwerb, passivieren, passiver
passivereren » massivereren, passivenereren, passiverereren, passiverwerben, passivierenen, passiveren, passivieren, passivierenden, passiverwerb
passieren » passiert, passiven

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 (passive OR (((passiveren OR passiverer) OR passivereren) OR passieren))) OR massive).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((passiv or (passive or (((passiveren OR passiverer) or passivereren) or passieren))) or massive)".
• Adding a wildcard symbol may retrieve word variants: ((passiv or (passive or (((passiveren OR passiverer) or passivereren) or passieren))) or massive)*.