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
contents 3.1 » contents 1, contents _, contents map
2 developing » 3 developing, 4 developing, 2 development
3.1 mobile » 2.1 mobile, 1.1 mobile, 7.1 mobile
em africa » 1 africa
costs 2 » costs 20, costs _, costs 4

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 3.1 mobile communications costs 2 developing em africa.*.