Perhaps you should try some spelling variations:
communications costs » communication costs, communications _
3.1 communications » 3.1 communication, 4.1 communication, 1.1 communication
developing assets » developing markets, development assets, developing areas
assets africa » aspects africa, passes africa, andes africa
4 developing » 3 developing
law debate » law debates, a debate, war debate
debate 3.1 » debate 2.1, debate 6.1, debate 3.5
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: technology _ information law debate 3.1 communications costs 4 developing assets africa.*.