Perhaps you should try some spelling variations:
information case » information based, information can, information costs
de communication » mobile communication, online communication
4.4 developing » 5.4 developing, 6.4 developing, 1.4 developing
developing a » developing _
case debate » care debate, class debate, false debate
debate de » debates de, debate we, debatte der
costs 4.4 » costs 4.2
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 case debate de communication costs 4.4 developing a africa.*.