Perhaps you should try some spelling variations:
information centers » information contents, information officers
communication cost » communication costs, communication costa, communications costs
technologies 3.1 » technologies 2.1, technologies 3.2, technologies _
e communication » de communication, 1 communication, une communication
5.4 developing » 6.4 developing, 3.3 developing, 2.2 developing
developing a » developing _
centers 12 » center 12, centers 10, centers 12.4
cost 5.4 » costs 5.4, cost 2.4, cost 3.4
a africa » 1 africa, can africa, em africa
12 e » 12 et, 12 _, 12 a

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

• Adding a wildcard symbol may retrieve word variants: technologies 3.1 information centers 12 e communication cost 5.4 developing a africa.*.