Perhaps you should try some spelling variations:
passiv » passive, massiv, passiven
passiveren » passiveeren, massiveren, passiveneren, passivieren, passieren, passiverer, passiverern, passivern
passiveeren » passiveeeren, massiveeren, passiveneeren, passivieren, passieren, passiverer, passivierenn, passivern, massiveren
passivern » passiveern, massivern, passivenern, passiven, passiver, passivieren
passivere » passiveere, massivere, passivenere, passiverer, passiver
passiveere » passiveeere, massiveere, passiveneere, passivieren, passiver, massivere

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