Perhaps you should try some spelling variations:
de communication » mobile communication, online communication
2.2 information » 4.2 information, 2.2.3 information, 2.2 transformation
information u.s » information und, information use, information 1.2
technology 2.2 » technology _, technology 1, technology 3
developing em » developing e, developing eq, developing amp
4 developing » 3 developing
u.s senate » u.s state
senate de » senales de, sante de, rente de
em africa » 1 africa
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 2.2 information u.s senate de communication costs 4 developing em africa.*.