Perhaps you should try some spelling variations:
oral communication » personal communication
technologien der » technologien des, technologie der, technologien fur
information case » information based, information can, information costs
developing areas » developing asia, developing east, developing a
der information » insider information, sector information, labor 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 der information case best oral communication costs 4 developing areas areas.*.