Perhaps you should try some spelling variations:
mobile communications » mobile communication
information content » information contents, information centers, information centre
communications cost » communications costs, communications cross, communication costs
technologien ad » technologien am, technologien und, technologien als
developing east » development east, developing a, developing asia
ad information » d information, nd information, od information
2.3 developing » 3.3 developing, 2.2 developing, 1.3 developing
east africa » west africa
content 3 » content _, content 1
3 mobile » _ mobile, a mobile, 2 mobile
cost 2.3 » costs 2.3, cost 2.4, cost 2.2

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

• Adding a wildcard symbol may retrieve word variants: technologien ad information content 3 mobile communications cost 2.3 developing east africa.*.