Perhaps you should try some spelling variations:
massiv » massive
massiven » massiveen, massive, passiven, massively
massivierungr » massiveierungr, passivierung, passivierungs
passivierende » passivierender, passivieren, aktivierende
massierung » maskierung, klassierung, trassierung

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: ((massiv OR (massiven OR passivierende)) OR (massivierungr OR massierung))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((massiv or (massiven or passivierende)) or (massivierungr OR massierung))*".