Perhaps you should try some spelling variations:
personal communication » interpersonal communication
information costs » information contents, information centers, information content
technologien ad » technologien am, technologien und, technologien als
ad information » d information, nd information, od information
4 developing » 3 developing
developing a » developing _
n personal » 1 personal, 4 personal, 2 personal
a access » 2 access, 3 access, 4 access
costs n » costs _, costs a, costs 5
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 ad information costs n personal communication costs 4 developing a access.*.