Perhaps you should try some spelling variations:
online communication » mobile communication, business communication, mobile communications
technologies 4 » technologies _
2.3 developing » 3.3 developing, 2.2 developing, 1.3 developing
4 information » 2 information, 1 information
developing ce » developing e, developing ict, developing cil
costs 2.3 » costs 4.2, costs 4.4
ce africa » de africa, care africa, use 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 contents _ online communication costs 2.3 developing ce africa.*.