Perhaps you should try some spelling variations:
information centers » information contents, information officers
das communication » mass communication, c's communication, lea's communication
12.4 developing » 1.4 developing, 2.2 developing, 1.3 developing
technologies 2 » technologies _, technologies 4
developing a » developing _
costs 12.4 » costs 11.4, costs 12.3, costs 2.4
centers 3 » centers _, centers a, centers 3.3
a africa » 1 africa, can africa, em africa
3 das » 1 das, 2 das

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

• Adding a wildcard symbol may retrieve word variants: technologies 2 information centers 3 das communication costs 12.4 developing a africa.*.