Perhaps you should try some spelling variations:
developpement l » developpement il, developpement la, developpement de
de variations » de variation, 1er variations, ier variations
typologie de » typologie des, typologie der, typologien der
l afrique » en afrique
der mass » der massen, der maske, over mass
a du » a de, a u, _ du

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 de variations _ der mass communication ((a du) OR (a d)) developpement l afrique.~".
• Adding a wildcard symbol may retrieve word variants: typologie de variations _ der mass communication ((a du) OR (a d)) developpement l afrique.*.