Perhaps you should try some spelling variations:
communications costs » communication costs, communications _
information centers » information contents, information officers
ea communications » a communications, 10 communications, 14 communications
technologies 2.1 » technologies _, technologies 4, technologies a
2.1 information » 3.1 information
3.3 developing » 4 developing, 2 developing, 1 developing
centers 1.3 » centers 3.3, centers 4.3, centers 12.4
costs 3.3 » costs 2.3, costs 3.5, costs 4.3
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 centers 1.3 ea communications costs 3.3 developing _ africa.*.