Perhaps you should try some spelling variations:
mobile communications » mobile communication
communications costs » communication costs, communications _
developing china » developing china's, development china, developing caring
3.5 developing » 3.3 developing, 3.2 developing, 1.5 developing
debate mobile » debate moral, debate sobre
technology 1 » technology _
about debate » about debt, about related, about state
china asia » china asean
costs 3.5 » costs 4.2, costs 4.4, costs 2.3

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

• Adding a wildcard symbol may retrieve word variants: technology 1 information about debate mobile communications costs 3.5 developing china asia.*.