Perhaps you should try some spelling variations:
passiv » massiv, passiven, passiver
passive » massive, passivene, passivere
passivere » massivere, passivenere, passiverere, passiver, passiviert
passivieren » massivieren, passivenieren, passiverieren, passivierende, passivierung, passieren
passiverer » massiverer, passivenerer, passivererer, passiverr, passiviertr, passiverwerb, passiver, passieren

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