Perhaps you should try some spelling variations:
online communication » mobile communication, business communication, mobile communications
technologies 4 » technologies _
3.3 developing » 4 developing, 2 developing, 1 developing
4 information » 2 information, 1 information
developing ce » developing e, developing ict, developing cil
costs 3.3 » costs 2.3, costs 3.5, costs 4.3
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 3.3 developing ce africa.*.