Perhaps you should try some spelling variations:
mobile communications » mobile communication
communications costs » communication costs, communications _
information centers » information contents, information officers
technologies 4 » technologies _
2.2 developing » 3.2 developing, 3.3 developing, 2.2 development
4 information » 2 information, 1 information
developing eu » developing e, developing eq, developing egg
centers 3.1 » center 3.1, centers 3.3, centers 3.8
3.1 mobile » 2.1 mobile, 1.1 mobile, 7.1 mobile
costs 2.2 » costs 4.2, costs 2.3, cost 2.2
eu africa » em africa, 1 africa, 11 africa

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

• Adding a wildcard symbol may retrieve word variants: technologies 4 information centers 3.1 mobile communications costs 2.2 developing eu africa.*.