Perhaps you should try some spelling variations:
de communication » mobile communication, online communication
use information » user information, house information, users information
information u.s » information und, information use, information 1.2
technology use » technology 1, technology 2.2, technology 3
developing amp » developing a, developing ai, developing av
4 developing » 3 developing
u.s debate » u.s senate, 2.1 debate, 3.4 debate
amp africa » em africa, wup 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 use information u.s debate de communication costs 4 developing amp africa.*.