Perhaps you should try some spelling variations:
communications costs » communication costs, communications _
voice communications » mobile communications, guinea communications, online communications
technologien does » technologien des, technologien als, technologie de
information 2.5.2 » information 1.5.2, information 2.2.2, information 2.3.2
does information » des informations, dis information, users information
developing farms » developing forms, developing forest, developing areas
a developing » a development
farms across » firms across, reforms across, flows across
2.5.2 a » 2.5.2 _
a voice » _ voice
costs a » costs _, costs 4

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

• Adding a wildcard symbol may retrieve word variants: technologien does information 2.5.2 a voice communications costs a developing farms across.*.