Perhaps you should try some spelling variations:
online communication » mobile communication, business communication, mobile communications
used information » user information, use information, based information
techniques used » techniques de
information und » informations und
4.2 developing » 2.2 developing, 3.2 developing, 4.1 developing
developing a » developing _
a areas » 1 areas, 2 areas, 4 areas

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

• Adding a wildcard symbol may retrieve word variants: techniques used information und der online communication costs 4.2 developing a areas.*.