Perhaps you should try some spelling variations:
communications costs » communication costs, communications _
information context » information content, information contents, information centers
et communications » et communication, et communicatione, 10 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
context 1.3 » context 3, context 2.1, context 3.1
costs 2.2 » costs 4.2, costs 2.3, cost 2.2
1.3 et » 1.3 el, 1.3 ea, 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 context 1.3 et communications costs 2.2 developing _ africa.*.