Perhaps you should try some spelling variations:
mobile communications » mobile communication
communications costs » communication costs, communications _
overview section » overview social
a developpement » au developpement, de developpement, le developpement
trade mobile » trade motives, trade profile, trade models
des afrique » en afrique, de l'afrique
1 trade » 4 trade
costs a » costs _, costs 4

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

• Adding a wildcard symbol may retrieve word variants: methods overview section 1 trade mobile communications costs a developpement des afrique.*.