Perhaps you should try some spelling variations:
model communications » modern communications, border communications, aided communications
communications costs » communication costs, communications _
information center » information centers, information centre, information content
technologies 2 » technologies _, technologies 4
5.4 developing » 6.4 developing, 3.3 developing, 2.2 developing
developing a » developing _
costs 5.4 » costs 4.4, costs 6.4, costs 2.4
center a » center _
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 2 information center a model communications costs 5.4 developing a africa.*.