Perhaps you should try some spelling variations:
de communication » mobile communication, online communication
technologies 4 » technologies _
7.3 developing » 3.3 developing, 1.3 developing, 2.2 developing
4 information » 2 information, 1 information
contents 2.2 » content 2.2, contents 2.1, contents 2.3
developing a » developing _
costs 7.3 » costs 2.3, costs 4.3, costs 5.3
a africa » 1 africa, can africa, em africa
2.2 de » 2.2 die, 2.2 der, 2.2 des

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 2.2 de communication costs 7.3 developing a africa.*.