Perhaps you should try some spelling variations:
mean communication » lean communication, modern communication, human communication
technologien 4 » technologien _, technologien 1, technologien 5
4 information » 2 information, 1 information
contents zero » contents intro, contents from, contents jiri
developing de » developing e, developing ce, developing deep
4 developing » 3 developing
zero mean » zero real
de africa » does africa, de america, use africa
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 4 information contents zero mean communication costs 4 developing de africa.*.