Perhaps you should try some spelling variations:
information centers » information contents, information officers
oral communication » personal communication
technologien als » technologien des, technologien fur, technologien und
developing state » developing states, developing stable, developing strategy
als information » als informations, aids information, laws information
4 developing » 3 developing
state africa » trade 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 als information centers _ oral communication costs 4 developing state africa.*.