Perhaps you should try some spelling variations:
oral communication » personal communication
information costs » information contents, information centers, information content
technologien als » technologien des, technologien fur, technologien und
als information » als informations, aids information, laws information
development 5.1 » development 1.1, development 5.4, development 5.2.1
5.1 access » 1.1 access, 3.1 access, 2.5.1 access
costs use » costs used, costs uses, costs case
use oral » use rural, ashe oral

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

• Adding a wildcard symbol may retrieve word variants: technologien als information costs use oral communication costs _ development 5.1 access.*.