Perhaps you should try some spelling variations:
mobile communications » mobile communication
communications costs » communication costs, communications _
used information » user information, use information, based information
information fund » information und, informations und, information befunde
techniques used » techniques de
4.1 developing » 3.1 developing, 4 developing, 3.3 developing
face mobile » case mobile, farm mobile, free mobile
fund face » fund fee, fund act, fund age
costs 4.1 » costs 4.2, costs 4.4, costs 4.3

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

• Adding a wildcard symbol may retrieve word variants: techniques used information fund face mobile communications costs 4.1 developing _ areas.*.