Perhaps you should try some spelling variations:
mobile communications » mobile communication
communications costs » communication costs, communications _
based information » basic information, based innovation, land information
techniques based » techniques used, techniques laser, techniques basic
information und » informations und
4.1 developing » 3.1 developing, 4 developing, 3.3 developing
face mobile » case mobile, farm mobile, free mobile
costs 4.1 » costs 4.2, costs 4.4, costs 4.3
und face » und fach, und farbe, und fabel

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

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