Perhaps you should try some spelling variations:
communication cost » communication costs, communication costa, communications costs
technologien des » technologien fur, technologien und, technologies 2
de communication » mobile communication, online communication
economies factor » economic factors
des information » des informations, does information, dis information
contents 2 » contents 1, contents _, contents i
cost 4 » cost _, cost 2.4
2 de » 2 die, 2 der, _ de

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

• Adding a wildcard symbol may retrieve word variants: technologien des information contents 2 de communication cost 4 emerging economies factor.*.