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
developing china » developing china's, development china, developing caring
4.4 developing » 5.4 developing, 6.4 developing, 1.4 developing
china africa » cpia africa, china asia
costs 4.4 » costs 4.2
1 de » 1 die, 1 der, _ de
contents » context

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

• Adding a wildcard symbol may retrieve word variants: technologien aids information contents 1 de communication costs 4.4 developing china africa.*.