Perhaps you should try some spelling variations:
communication cost » communication costs, communication costa, communications costs
technologien als » technologien des, technologien fur, technologien und
information loss » information laws, information law, information 2
de communication » mobile communication, online communication
als information » als informations, aids information, laws information
5.4 developing » 6.4 developing, 3.3 developing, 2.2 developing
loss debt » gross debt, flows debt, does debt
cost 5.4 » costs 5.4, cost 2.4, cost 3.4
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 loss debt de communication cost 5.4 developing _ areas.*.