Perhaps you should try some spelling variations:
2.2.3 information » 2.2 information, 4.3 information
technology 2.2.3 » technology 1.2.3, technology 2.1.3, technology 2.2.2
de communication » mobile communication, online communication
information und » informations und
developing em » developing e, developing eq, developing amp
4 developing » 3 developing
und debate » un debate, und debatten, under debate
debate de » debates de, debate we, debatte der
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 2.2.3 information und debate de communication costs 4 developing em africa.*.