Perhaps you should try some spelling variations:
de communication » mobile communication, online communication
developpement du » developpement de, developpement des, developpement et
der variations » der variation, 1er variations, ier variations
typologie der » typologie des, ideologie der
variations 4 » variations _, variation 4, variations 1
du afrique » en afrique, l afrique, de l'afrique
does de » does debt
4 does » 2 does
3.3 el » 3.3 eu

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 der variations 4 does de communication ((3.3 el) OR (2.3 el)) developpement du afrique.~".
• Adding a wildcard symbol may retrieve word variants: typologie der variations 4 does de communication ((3.3 el) OR (2.3 el)) developpement du afrique.*.