Perhaps you should try some spelling variations:
passiv » passive, passiven, passiver
passivierende » passiveierende, passivenierende, passiverierende, passivierender, passivieren, aktivierende
passivere » passiveere, passivenere, passiverere, passiverer, passiver, passivieren
massiv » massive
massivere » massiveere, massiver, massive, 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 passivierende) OR massiv) OR (passivere OR massivere)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(((passiv or passivierende) or massiv) or (passivere OR massivere))".
• Adding a wildcard symbol may retrieve word variants: (((passiv or passivierende) or massiv) or (passivere OR massivere))*.