Perhaps you should try some spelling variations:
passiv » passive, massiv, passiven
passivierungr » passiveierungr, massivierungr, passivenierungr, passivierungs, passivierender, passivieren, aktivierungr
passivierung » passiveierung, massivierung, passivenierung, aktivierung
massiven » massive, passiven, massively
massivieren » passivieren, massivere, massigeren

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 (massiven OR massivieren)) OR (passivierungr OR passivierung)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((passiv or (massiven or massivieren)) or (passivierungr OR passivierung))".
• Adding a wildcard symbol may retrieve word variants: ((passiv or (massiven or massivieren)) or (passivierungr OR passivierung))*.