Perhaps you should try some spelling variations:
mobile communications » mobile communication
communications costs » communication costs, communications _
information 2.2.2 » information 12.2.2, information 2.3.2, information 3.2.2
technologies 2.1 » technologies _, technologies 4, technologies a
2.1 information » 3.1 information
developing asia » development asia, developing a
4 developing » 3 developing
4 mobile » _ mobile, a mobile, 2 mobile
2.2.2 4 » 2.2.2 _, 2.2.2 a
costs 4 » costs _, costs a, costs 4.2

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

• Adding a wildcard symbol may retrieve word variants: technologies 2.1 information 2.2.2 4 mobile communications costs 4 developing asia across.*.