Perhaps you should try some spelling variations:
mobile communications » mobile communication
communications costs » communication costs, communications _
information centers » information contents, information officers
11.7 developing » 11.5 developing, 12.7 developing, 11.7.4 developing
technologies 4 » technologies _
developing amp » developing a, developing ai, developing av
4 information » 2 information, 1 information
costs 11.7 » costs 11.1, costs 11.4, costs 1.1.3
amp africa » em africa, wup africa
centers i » centers _, centers 3, centers a
i mobile » ii mobile, _ mobile, a mobile

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

• Adding a wildcard symbol may retrieve word variants: technologies 4 information centers i mobile communications costs 11.7 developing amp africa.*.