Perhaps you should try some spelling variations:
oral communication » personal communication
technologien zur » technologien fur, technologien des, technologien und
information case » information based, information can, information costs
developing areas » developing asia, developing east, developing a
zur information » fur information, your information, der information
4 developing » 3 developing
areas areas » areas arenas, seas areas, areas access
best oral » best deal
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 zur information case best oral communication costs 4 developing areas areas.*.