Perhaps you should try some spelling variations:
personal communication » interpersonal communication
information costs » information contents, information centers, information content
technologie und » technologies 2.1
und information » fund information, road information, award information
2.2 personal » 2.3 personal, 2.4 personal, 1.2 personal
a developing » a development
developing a » developing _
costs 2.2 » costs 4.2, costs 2.3, cost 2.2
a access » 2 access, 3 access, 4 access
costs a » costs _, costs 4

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

• Adding a wildcard symbol may retrieve word variants: technologie und information costs 2.2 personal communication costs a developing a access.*.