Perhaps you should try some spelling variations:
communications costs » communication costs, communications _
information centers » information contents, information officers
et communications » et communication, et communicatione, 10 communications
technologies 3.1 » technologies 2.1, technologies 3.2, technologies _
2.4 developing » 12.4 developing, 2.2 developing, 5.4 developing
developing em » developing e, developing eq, developing amp
centers 3.3 » centers 3.8, centers 4.3, century 3.3
costs 2.4 » costs 12.4, costs 23.4, cost 2.4
em africa » 1 africa
3.3 et » 3.3 el, 3.3 eu, 3.3 en

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

• Adding a wildcard symbol may retrieve word variants: technologies 3.1 information centers 3.3 et communications costs 2.4 developing em africa.*.