Perhaps you should try some spelling variations:
de communication » mobile communication, online communication
developpement en » developpement et, developpement des, developpement de
variation did » variation des, variation der, variation im
6 variation » 6 variations, _ variation, 2 variation
typology 6 » typology _, typology 4.1
did soe » did so
5 our » 25 our, _ our, 5 zur
5 ou » 5 out, 5 zu, 5 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: "typology 6 variation did soe de communication ((5 ou) OR (5 our)) developpement en afrique.~".
• Adding a wildcard symbol may retrieve word variants: typology 6 variation did soe de communication ((5 ou) OR (5 our)) developpement en afrique.*.