Perhaps you should try some spelling variations:
communications costs » communication costs, communications _
ea communications » a communications, 10 communications, 14 communications
technologies 2.1 » technologies _, technologies 4, technologies a
2.1 information » 3.1 information
2.2 developing » 3.2 developing, 3.3 developing, 2.2 development
contents 1.3 » contents 1.1, contents 2.3, contexts 1.3
costs 2.2 » costs 4.2, costs 2.3, cost 2.2
1.3 ea » 1.3 el, 1.3 ca, 1.3 ed

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

• Adding a wildcard symbol may retrieve word variants: technologies 2.1 information contents 1.3 ea communications costs 2.2 developing _ africa.*.