Perhaps you should try some spelling variations:
under communications » under communication, border communications, modern communications
communications costs » communication costs, communications _
information centers » information contents, information officers
5.4 developing » 6.4 developing, 3.3 developing, 2.2 developing
developing a » developing _
centers 2.3 » center 2.3, centers 2.2, centers 2.8
2.3 under » 2.1 under, 2.2 under, 2.3 unser
costs 5.4 » costs 4.4, costs 6.4, costs 2.4
a africa » 1 africa, can africa, em africa

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

• Adding a wildcard symbol may retrieve word variants: technologies _ information centers 2.3 under communications costs 5.4 developing a africa.*.