Perhaps you should try some spelling variations:
communications costs » communication costs, communications _
technologies 2 » technologies _, technologies 4
4 developing » 3 developing
developing a » developing _
contents je » contents key, contents 1, contents _
a africa » 1 africa, can africa, em africa
je data » e data, age data, cge data
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 je data communications costs 4 developing a africa.*.