Perhaps you should try some spelling variations:
communications costs » communication costs, communications _
information center » information centers, information centre, information content
10 communications » 10 communication, 14 communications, 2 communications
developing intra » developing data, developing ict, developing interbank
technologies 2 » technologies _, technologies 4
4.3 developing » 3.3 developing, 1.3 developing, 7.3 developing
intra african » intra africa, central african
costs 4.3 » costs 4.2, costs 4.4, costs 2.3
center 2 » center 12, center _, center a
2 10 » _ 10, 2 1, 9 10

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

• Adding a wildcard symbol may retrieve word variants: technologies 2 information center 2 10 communications costs 4.3 developing intra african.*.