Perhaps you should try some spelling variations:
online communication » mobile communication, business communication, mobile communications
information und » informations und
us information » u.s information, vs information, plus information
2.2 developing » 3.2 developing, 3.3 developing, 2.2 development
techniques us » techniques up, techniques used, techniques _
developing a » developing _
costs 2.2 » costs 4.2, costs 2.3, cost 2.2
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 us information und der online communication costs 2.2 developing a areas.*.