Perhaps you should try some spelling variations:
mobile communications » mobile communication
communications costs » communication costs, communications _
voice information » choice information, price information, vehicle information
information rules » information bundles, information tussles, information tables
technology voice » technology choice, technology choices, technology volume
4 developing » 3 developing
developing l » developing l2, developing _, developing a
das mobile » does mobile, a mobile
rules das » rules fast, rules a
l afrique » en afrique
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: technology voice information rules das mobile communications costs 4 developing l afrique.*.