Perhaps you should try some spelling variations:
information cause » information case, information use, information classes
de communication » mobile communication, online communication
developing cross » development cross, developing areas, development across
cause debate » care debate, false debate, change debate
4 developing » 3 developing
cross africa » across africa, across african, crises africa
debate de » debates de, debate we, debatte der
costs 4 » costs _, costs a, costs 4.2

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

• Adding a wildcard symbol may retrieve word variants: technology _ information cause debate de communication costs 4 developing cross africa.*.