Perhaps you should try some spelling variations:
information century » information centers, information centre, information center
a communication » la communication, data communication, data communications
technologies 2 » technologies _, technologies 4
4 developing » 3 developing
developing a » developing _
century 2.1 » century 3.1, century 2.2, century 1
a africa » 1 africa, can africa, em africa
costs 4 » costs _, costs a, costs 4.2
2.1 a » 2.1 _

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

• Adding a wildcard symbol may retrieve word variants: technologies 2 information century 2.1 a communication costs 4 developing a africa.*.