Perhaps you should try some spelling variations:
personal communication » interpersonal communication
developing status » developing states, developing state, development status
technologien des » technologien fur, technologien und, technologies 2
des information » des informations, does information, dis information
models personal » model personal, des personal, roles personal
information 2 » information 3
status africa » states african, state africa, rates africa
4 developing » 3 developing
2 models » 2 model
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 2 models personal communication costs 4 developing status africa.*.