Perhaps you should try some spelling variations:
mobilen communication » mobile communication, mobile communications, mobile commusnication
care information » more information, change information, trade information
techniques care » techniques case, techniques parent, techniques based
information und » informations und
developing east » development east, developing a, developing asia
2.3 developing » 3.3 developing, 2.2 developing, 1.3 developing
der mobilen » bei mobilen, der mobil, der mobilfunk
costs 2.3 » costs 4.2, costs 4.4
east sezs » east asezs, east seeds

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

• Adding a wildcard symbol may retrieve word variants: techniques care information und der mobilen communication costs 2.3 developing east sezs.*.