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
2.2 development » 3.2 development, 2.3 development, 4.2 development
ad information » d information, nd information, od information
costa 2.2 » cost 2.2, costs 2.2, forsta 2.2
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 2.2 development _ areas.*.