Perhaps you should try some spelling variations:
mobile communications » mobile communication
communications costs » communication costs, communications _
developpement de » developpement des, developpement durable
a developpement » au developpement, de developpement, le developpement
technology 4.2 » technology 2.2, technology 3.2, technology 4.1
information 2 » information 3
does mobile » das mobile
costs a » costs _, costs 4
2 does » 4 does

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

• Adding a wildcard symbol may retrieve word variants: technology 4.2 information 2 does mobile communications costs a developpement de l'afrique.*.