Perhaps you should try some spelling variations:
online communication » mobile communication, business communication, mobile communications
information fragen » information foraging, information age, information fake
4 developing » 3 developing
developing 4 » developing _, developing a, developing e
fragen die » frage die, frauen die, franken die
die online » der online, das online, des online
costs 4 » costs _, costs a, costs 4.2
4 areas » 1 areas, 2 areas, 4 areal

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

• Adding a wildcard symbol may retrieve word variants: technologies _ information fragen die online communication costs 4 developing 4 areas.*.