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
des information » des informations, does information, dis information
developing west » developing tests, developing waste, developing east
12 developing » 1.2 developing, 2 developing, 1 developing
contents 1.3 » contents 1.1, contents 2.3, contexts 1.3
cost 12 » cost 1.2, cost 15, cost 3.2
1.3 de » 1.3 die, 1.3 der, 1.3 den

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 1.3 de communication cost 12 developing west africa.*.