Perhaps you should try some spelling variations:
communication cost » communication costs, communication costa, communications costs
technologien als » technologien des, technologien fur, technologien und
information bank » information b, information 2, information 1
de communication » mobile communication, online communication
als information » als informations, aids information, laws information
3 developing » 3 development
developing 4 » developing _, developing a, developing e
debt de » debt do, debt debt, debt gdp
4 areas » 1 areas, 2 areas, 4 areal
cost 3 » cost 3d, cost e3, cost _

You may be able to get more results by adjusting your search query.

• Adding a wildcard symbol may retrieve word variants: technologien als information bank debt de communication cost 3 developing 4 areas.*.