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
15 developing » 1 developing, 5 developing, 10 developing
contents how » content how, contents co, contents mot
developing e » developing _, developing a, developing east
e africa » em africa, de africa, eu africa
cost 15 » cost 12, cost 5, cost 11.5
how de » how doe, how do, how ae

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 how de communication cost 15 developing e africa.*.