Perhaps you should try some spelling variations:
communication cost » communication costs, communication costa, communications costs
technologien als » technologien des, technologien fur, technologien und
de communication » mobile communication, online communication
als information » als informations, aids information, laws information
information 1.2 » information 1.5.2, information 2
3.2 developing » 3.3 developing, 2.2 developing, 3 developing
1.2 debt » 4.2 debt, 10.8 debt, 1.2 der
cost 3.2 » cost 2.4
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 als information 1.2 debt de communication cost 3.2 developing _ areas.*.