Perhaps you should try some spelling variations:
communications costs » communication costs, communications _
information centers » information contents, information officers
de communications » de communication, do communications, mce communications
technologies 2.1 » technologies _, technologies 4, technologies a
2.1 information » 3.1 information
4.4 developing » 5.4 developing, 6.4 developing, 1.4 developing
developing a » developing _
centers how » center how, centers hold, century how
costs 4.4 » costs 4.2
a africa » 1 africa, can africa, em africa
how de » how doe, how do, how ae

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 centers how de communications costs 4.4 developing a africa.*.