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