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
a developing » a development
east areas » karst areas, east asezs
costs 2 » costs 20, costs _, costs 4
costs a » costs _, costs 4
2 oral » _ 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 2 oral communication costs a developing east areas.*.