Perhaps you should try some spelling variations:
4 communication » 3 communication, 5.4 communication, de communication
systems debate » system debate, systems data, systems device
2.2 developing » 3.2 developing, 3.3 developing, 2.2 development
developing a » developing _
costs 2.2 » costs 4.2, costs 2.3, cost 2.2
debate 4 » debate _, debate 3, debate a
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: technology _ information systems debate 4 communication costs 2.2 developing a africa.*.