Perhaps you should try some spelling variations:
communication cost » communication costs, communication costa, communications costs
de communication » mobile communication, online communication
technologien ad » technologien am, technologien und, technologien als
ad information » d information, nd information, od information
2.2 developing » 3.2 developing, 3.3 developing, 2.2 development
information b » information 2, information 1, information bank
developing a » developing _
cost 2.2 » costs 2.2, cost 2.4, cost 3.2
debt de » debt do, debt debt, debt gdp
a areas » 1 areas, 2 areas, 4 areas
b debt » 3 debt, 4 debt, bad debt

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

• Adding a wildcard symbol may retrieve word variants: technologien ad information b debt de communication cost 2.2 developing a areas.*.