Perhaps you should try some spelling variations:
voice communications » mobile communications, guinea communications, online communications
communications costs » communication costs, communications _
developing contexts » developing concepts, development contexts, developed contexts
contexts selected » context selected, contexts affected, notes selected
technologien d » technologien ad, technologien _, technologien 1
d information » nd information, od information, und information
information 2 » information 3
4 developing » 3 developing
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 d information 2 _ voice communications costs 4 developing contexts selected.*.