Perhaps you should try some spelling variations:
information costs » information contents, information centers, information content
5.1 communication » 4.1 communication, 1.1 communication, 3.1 communication
technologien des » technologien fur, technologien und, technologies 2
des information » des informations, does information, dis information
a developing » a development
developing 2 » developing _, developing a, developing e
costs a » costs _, costs 4
a 5.1 » a 4.1, a 6.1, a 2.1

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

• Adding a wildcard symbol may retrieve word variants: technologien des information costs a 5.1 communication costs a developing 2 real.*.