Perhaps you should try some spelling variations:
communication costa » communication costs, communications costs, communication cote
information costs » information contents, information centers, information content
de communication » mobile communication, online communication
technologien ad » technologien am, technologien und, technologien als
4.2 development » 3.2 development, 2.3 development, 1 development
ad information » d information, nd information, od information
costa 4.2 » costs 4.2, costs 4.4, cost 3.2
debt de » debt do, debt debt, debt gdp

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

• Adding a wildcard symbol may retrieve word variants: technologien ad information costs debt de communication costa 4.2 development _ areas.*.