Perhaps you should try some spelling variations:
communications costs » communication costs, communications _
technologies 2 » technologies _, technologies 4
contents flow » contents from, contents how, contents fase
4 developing » 3 developing
developing a » developing _
a africa » 1 africa, can africa, em africa
costs 4 » costs _, costs a, costs 4.2

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

• Adding a wildcard symbol may retrieve word variants: technologies 2 information contents flow data communications costs 4 developing a africa.*.