Perhaps you should try some spelling variations:
technologien aids » technologien als, technologien ad, technologien des
aids information » chandos information, series information
de communication » mobile communication, online communication
2.2 developing » 3.2 developing, 3.3 developing, 2.2 development
developing a » developing _
costs 2.2 » costs 4.2, costs 2.3, cost 2.2
4.2 der » 2.2 der, 3.2 der
a areas » 1 areas, 2 areas, 4 areas

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

• Adding a wildcard symbol may retrieve word variants: technologien aids information 4.2 der de communication costs 2.2 developing a areas.*.