Perhaps you should try some spelling variations:
dam development » dams development, team development, farm development
development eco » development second, development east, development menu
ideologie der » ideologie und, typologie der
der variation » de variation, does variation, die variation
variation 6 » variation _, variations _, variation des
eco afrique » en afrique
der maske » der marke, der markte, der massen
der mass » der massen, over mass, air mass
a dam » a das, a day, _ dam

You may be able to get more results by adjusting your search query.

• The words AND, OR and NOT may confuse the search; try adding quotes: "ideologie der variation 6 ((der mass) OR (der maske)) communication a dam development eco afrique.~".
• Adding a wildcard symbol may retrieve word variants: ideologie der variation 6 ((der mass) OR (der maske)) communication a dam development eco afrique.*.