Perhaps you should try some spelling variations:
technologien series » technologies series, technology series, technologies varies
series information » business information
communication cost » communication costs, communication costa, communications costs
de communication » mobile communication, online communication
2.2 developing » 3.2 developing, 3.3 developing, 2.2 development
developing a » developing _
cost 2.2 » costs 2.2, cost 2.4, cost 3.2
3.2 der » 2.2 der
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: technologien series information 3.2 der de communication cost 2.2 developing a areas.*.