Perhaps you should try some spelling variations:
information cost » information costs, information lost, information case
3 communication » 4 communication, de communication, data communication
countries april » countries africa
2.3 developing » 3.3 developing, 2.2 developing, 1.3 developing
technology 1 » technology _
cost debate » class debate, trust debate
costs 2.3 » costs 4.2, costs 4.4
debate 3 » debate _, debate 4, debate a

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

• Adding a wildcard symbol may retrieve word variants: technology 1 information cost debate 3 communication costs 2.3 developing countries april.*.