Perhaps you should try some spelling variations:
information content » information contents, information centers, information centre
open communication » human communication, 3 communication, 4 communication
technologien als » technologien des, technologien fur, technologien und
als information » als informations, aids information, laws information
7.3 developing » 3.3 developing, 1.3 developing, 2.2 developing
content 2.3 » context 2.3, content 3.3, content 5.3
costs 7.3 » costs 2.3, costs 4.3, costs 5.3
2.3 open » 2.2 open, 2.5 open, 2.4 open

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

• Adding a wildcard symbol may retrieve word variants: technologien als information content 2.3 open communication costs 7.3 developing _ africa.*.