Perhaps you should try some spelling variations:
communication cost » communication costs, communication costa, communications costs
technologien und » technologie und, technologien des, technologien fur
do communication » do communications, de communication, ngo communication
und information » fund information, road information, award information
3.3 developing » 4 developing, 2 developing, 1 developing
developing a » developing _
law debt » low debt, law debate, how debt
cost 3.3 » cost 3.2, cost 2.3, cost 3.4
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 und information law debt do communication cost 3.3 developing a areas.*.