Perhaps you should try some spelling variations:
oral communication » personal communication
information costs » information contents, information centers, information content
technologien nd » technologien und, technologien ad, technologie und
developing base » developing based, developing east, developing brain
nd information » und information, d information, od information
base areas » basic areas, based areal, basin areas
costs 4 » costs a, costs 4.2, costs 4.4
4 oral » _ oral, 2 oral

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

• Adding a wildcard symbol may retrieve word variants: technologien nd information costs 4 oral communication costs _ developing base areas.*.