Perhaps you should try some spelling variations:
oral communication » personal communication
technologien aids » technologien als, technologien ad, technologien des
aids information » chandos information, series information
information und » informations und
developing seas » developing areas, developing east, developing self
4 developing » 3 developing
new oral » new moral, knew moral, new rural
und new » und neo, und ne, usd new
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 aids information und new oral communication costs 4 developing seas areas.*.