Perhaps you should try some spelling variations:
mobile commusnication » mobile communication, mobile communications, mobilite communication
developpement de » developpement des, developpement durable
technologie vs » technologie ve, technologie c, technologie im
vs informal » _ informal, 3 informal
der mobile » der mobilen, der mobil, does mobile
3 le » 3 les, 3 la, 5 le
1 le » 1 les, 1 la, 5 le

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: "technologie vs informal _ der mobile commusnication ((3 le) OR (1 le)) developpement de l'afrique.~".
• Adding a wildcard symbol may retrieve word variants: technologie vs informal _ der mobile commusnication ((3 le) OR (1 le)) developpement de l'afrique.*.