Perhaps you should try some spelling variations:
communication cost » communication costs, communication costa, communications costs
information costs » information contents, information centers, information content
technologien des » technologien fur, technologien und, technologies 2
de communication » mobile communication, online communication
des information » des informations, does information, dis information
2.3 developing » 3.3 developing, 2.2 developing, 1.3 developing
developing a » developing _
cost 2.3 » costs 2.3, cost 2.4, cost 2.2
debt de » debt do, debt debt, debt gdp
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 des information costs debt de communication cost 2.3 developing a areas.*.