Perhaps you should try some spelling variations:
oral communication » personal communication
information costs » information contents, information centers, information content
technologien ad » technologien am, technologien und, technologien als
developing east » development east, developing a, developing asia
ad information » d information, nd information, od information
east areas » karst areas, east asezs
costs 3 » costs 4, costs a, costs 5
3 oral » _ oral, 2 oral, 4 oral

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

• Adding a wildcard symbol may retrieve word variants: technologien ad information costs 3 oral communication costs _ developing east areas.*.