Perhaps you should try some spelling variations:
oral communication » personal communication
technologien des » technologien fur, technologien und, technologies 2
information case » information based, information can, information costs
developing areas » developing asia, developing east, developing a
des information » des informations, does information, dis information
areas areas » areas arenas, seas areas, areas access
best oral » best deal

You may be able to get more results by adjusting your search query.

• Adding a wildcard symbol may retrieve word variants: technologien des information case best oral communication costs _ developing areas areas.*.