Perhaps you should try some spelling variations:
communication cost » communication costs, communication costa, communications costs
technologien als » technologien des, technologien fur, technologien und
information loan » information law, information loss, information long
de communication » mobile communication, online communication
als information » als informations, aids information, laws information
12.4 developing » 1.4 developing, 2.2 developing, 1.3 developing
cost 12.4 » coast 12.4, costs 12.4, 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 loan debt de communication cost 12.4 developing _ areas.*.