Perhaps you should try some spelling variations:
called communication » based communication, scale communication, scales communication
technologien aids » technologien als, technologien ad, technologien des
aids information » chandos information, series information
4 developing » 3 developing
developing a » developing _
1 called » _ called, so called, we called
a africa » 1 africa, can africa, em africa
costs 4 » costs _, costs a, costs 4.2
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 called communication costs 4 developing a africa.*.