Perhaps you should try some spelling variations:
communications costs » communication costs, communications _
voice communications » mobile communications, guinea communications, online communications
information based » information case, information bank, transformation based
technologien des » technologien fur, technologien und, technologies 2
developing basic » developing asia, developing based, developing brazil
des information » des informations, does information, dis information
4 developing » 3 developing
basic areas » basin area, basic ideas, basic access
based de » based dm, based debt, based deep
de voice » de voce, de voie, new voice
costs 4 » costs _, costs a, costs 4.2

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

• Adding a wildcard symbol may retrieve word variants: technologien des information based de voice communications costs 4 developing basic areas.*.