Perhaps you should try some spelling variations:
de communication » mobile communication, online communication
technologies 2 » technologies _, technologies 4
developing eco » developing e, developing ict, developing ce
2 interaction » 3 interaction, 3.2 interaction, 3.1 interaction
4 developing » 3 developing
eco afrique » en afrique
model data » models data
data de » data den, data die, data do
costs 4 » costs _, costs a, costs 4.2

You may be able to get more results by adjusting your search query.

• Adding a wildcard symbol may retrieve word variants: technologies 2 interaction model data de communication costs 4 developing eco afrique.*.