Perhaps you should try some spelling variations:
passiv » passive, massiv, passiven
passiveere » passiveeere, massiveere, passiveneere, passivieren, passiver, massivere
aktivierende » aktivieren, praktizierende, motivierenden
aktivierenden » aktivierenn, praktizierenden, motivierendenn, aktivieren
motivierende » motivieren, motivierte, motivierten

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 passiveere) OR (aktivierende OR (aktivierenden OR motivierende))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((passiv or passiveere) or (aktivierende or (aktivierenden OR motivierende)))".
• Adding a wildcard symbol may retrieve word variants: ((passiv or passiveere) or (aktivierende or (aktivierenden OR motivierende)))*.