Perhaps you should try some spelling variations:
oral communication » personal communication
technologien des » technologien fur, technologien und, technologies 2
developing state » developing states, developing stable, developing strategy
des information » des informations, does information, dis information
information 1 » information 2, information 3, information 3.2
4 developing » 3 developing
state africa » trade africa
models oral » modern oral, models model, models order
1 models » 17 models, 2 models, 3 models
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 1 models oral communication costs 4 developing state africa.*.