Perhaps you should try some spelling variations:
mobile communications » mobile communication
communications costs » communication costs, communications _
technologies 4 » technologies _
4.2 developing » 2.2 developing, 3.2 developing, 4.1 developing
4 information » 2 information, 1 information
information a » information age, information about
developing a » developing _
lind mobile » und mobile, being mobile, china mobile
a areas » 1 areas, 2 areas, 4 areas
a lind » a blind, a link, a line

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

• Adding a wildcard symbol may retrieve word variants: technologies 4 information a lind mobile communications costs 4.2 developing a areas.*.