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
4.4 developing » 5.4 developing, 6.4 developing, 1.4 developing
developing ce » developing e, developing ict, developing cil
contents how » content how, contents co, contents mot
costs 4.4 » costs 4.2
ce africa » de africa, care africa, use africa
how de » how doe, how do, how ae

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 how de communication costs 4.4 developing ce africa.*.