Perhaps you should try some spelling variations:
communications costs » communication costs, communications _
voice communications » mobile communications, guinea communications, online communications
technologien als » technologien des, technologien fur, technologien und
information 17.2 » information 1.2, information 15.2, information 11.2
developing human » development human, developing a, developing asia
als information » als informations, aids information, laws information
a developing » a development
1 voice » 1 voiced, 1 voices, 11 voice
costs a » costs _, costs 4
17.2 1 » 17.2 _

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

• Adding a wildcard symbol may retrieve word variants: technologien als information 17.2 1 voice communications costs a developing human assets.*.