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
2.4 developing » 12.4 developing, 2.2 developing, 5.4 developing
developing 1 » developing _, developing a, developing e
4.2 debt » 4.2 der, 4.2 deep, 2.5 debt
debt de » debt do, debt debt, debt gdp
1 areas » 1 area, 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 als information 4.2 debt de communication cost 2.4 developing 1 areas.*.