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
der information » insider information, sector information, labor information
developing seas » developing areas, developing east, developing self
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 der information case best oral communication costs _ developing seas areas.*.