Perhaps you should try some spelling variations:
communications costs » communication costs, communications _
information centers » information contents, information officers
technologien des » technologien fur, technologien und, technologies 2
des information » des informations, does information, dis information
developing does » developing deep, developing forest, development does
does africa » zones africa, does america, dress africa
centers 3 » centers _, centers a, centers 3.3

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

• Adding a wildcard symbol may retrieve word variants: technologien des information centers 3 data communications costs _ developing does africa.*.