Perhaps you should try some spelling variations:
voice communications » mobile communications, guinea communications, online communications
communications costs » communication costs, communications _
information content » information contents, information centers, information centre
11.4 developing » 1.4 developing, 12.4 developing, 10.4 developing
technologien 2 » technologies 2, technologien _, technologien 1
content non » content how, content among, content from
costs 11.4 » costs 11.1, costs 11.7, costs 12.4
non voice » non price, new voice, one voice

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

• Adding a wildcard symbol may retrieve word variants: technologien 2 information content non voice communications costs 11.4 developing _ africa.*.