Perhaps you should try some spelling variations:
communication cost » communication costs, communication costa, communications costs
do communication » do communications, de communication, ngo 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
developing a » developing _
law debt » low debt, law debate, how debt
cost 2.2 » costs 2.2, cost 2.4, cost 3.2
debt do » debt gdp, debt how
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 ad information law debt do communication cost 2.2 developing a areas.*.