Perhaps you should try some spelling variations:
passiv » passive, passiven, passiver
passivierende » passiveierende, passivenierende, passiverierende, passivierender, passivieren, aktivierende
massiv » massive
massivere » massiveere, massiver, massive, massively
massiveere » massiveeere, massiver

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