Perhaps you should try some spelling variations:
chad communications » canada communications, chile communications, china communications
developpement l » developpement il, developpement la, developpement de
des variation » does variation, de variation, der variation
variation 6 » variation _, variations _, variation des
l afrique » en afrique
das chad » faso chad, das clan
6 das » 1 das, 2 das, 3 das
2 der » _ der
2 de » 2 die, _ de
typologie » typologies, typology

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: "typologie des variation 6 das chad communications ((2 de) OR (2 der)) developpement l afrique.~".
• Adding a wildcard symbol may retrieve word variants: typologie des variation 6 das chad communications ((2 de) OR (2 der)) developpement l afrique.*.