Perhaps you should try some spelling variations:
technologies 2.1 » technologies _, technologies 4, technologies a
de communication » mobile communication, online communication
2.1 information » 3.1 information
4 developing » 3 developing
developing a » developing _
contents 4 » contents 1, contents _, contents i
a africa » 1 africa, can africa, em africa
costs 4 » costs _, costs a, costs 4.2
4 de » 4 die, 4 der, 4 des

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

• Adding a wildcard symbol may retrieve word variants: technologies 2.1 information contents 4 de communication costs 4 developing a africa.*.