Perhaps you should try some spelling variations:
de communication » mobile communication, online communication
developing cross » development cross, developing areas, development across
information can » information case, information 1, information 1.2
technology 1 » technology _
3 developing » 3 development
cross africa » across africa, across african, crises africa
can debate » care debate, gain debate, a debate
debate de » debates de, debate we, debatte der
costs 3 » costs _, costs 4, costs a

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

• Adding a wildcard symbol may retrieve word variants: technology 1 information can debate de communication costs 3 developing cross africa.*.