Perhaps you should try some spelling variations:
mobile communications » mobile communication
communications costs » communication costs, communications _
developing lie » developing e, developing ai, developing ce
4 developing » 3 developing
lie afrique » l afrique
der mobile » der mobilen, der mobil, does mobile
about der » about dnr, about older, about dark
costs 4 » costs _, costs a, costs 4.2

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

• Performing a fuzzy search may retrieve terms with similar spellings: technologies _ information about der mobile communications costs 4 developing lie afrique.~.
• Adding a wildcard symbol may retrieve word variants: technologies _ information about der mobile communications costs 4 developing lie afrique.*.