Perhaps you should try some spelling variations:
mean communication » lean communication, modern communication, human communication
technologien d » technologien ad, technologien _, technologien 1
4.1 developing » 3.1 developing, 4 developing, 3.3 developing
d information » nd information, od information, und information
contents zero » contents intro, contents from, contents jiri
developing de » developing e, developing ce, developing deep
zero mean » zero real
costs 4.1 » costs 4.2, costs 4.4, costs 4.3
de africa » does africa, de america, use africa

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

• Adding a wildcard symbol may retrieve word variants: technologien d information contents zero mean communication costs 4.1 developing de africa.*.