Perhaps you should try some spelling variations:
mobile communications » mobile communication
communications costs » communication costs, communications _
technologies 4 » technologies _
4 information » 2 information, 1 information
developing em » developing e, developing eq, developing amp
2 developing » 3 developing, 4 developing, 2 development
em africa » 1 africa
1 mobile » _ mobile, a mobile, 2 mobile
costs 2 » costs 20, costs _, costs 4
contents » context

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

• Adding a wildcard symbol may retrieve word variants: technologies 4 information contents 1 mobile communications costs 2 developing em africa.*.