Perhaps you should try some spelling variations:
information centers » information contents, information officers
oral communication » personal communication
technologien does » technologien des, technologien als, technologie de
does information » des informations, dis information, users information
developing can » developing a, developing ai, developing av
4 developing » 3 developing
centers auf » centers a, centre auf, centers case
can africa » urban 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: technologien does information centers auf oral communication costs 4 developing can africa.*.