Perhaps you should try some spelling variations:
oral communication » personal communication
technologien des » technologien fur, technologien und, technologies 2
des information » des informations, does information, dis information
developing em » developing e, developing eq, developing amp
contents new » contexts new, contents how, contents je
4 developing » 3 developing
em africa » 1 africa
new oral » new moral, knew moral, new rural
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 des information contents new oral communication costs 4 developing em africa.*.