Perhaps you should try some spelling variations:
8.3 communication » 2.3 communication, 4.3 communication, 1.3 communication
information cost » information costs, information lost, information case
development de » development d, development ds, developpement de
technology 2 » technology _, technology 1, technology 3
cost debate » class debate, trust debate
debate 8.3 » debate 3, debate 2.1, debate 4.2
de africa » does africa, de america, use africa
costs 2 » costs 20, costs _, costs 4

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

• Adding a wildcard symbol may retrieve word variants: technology 2 information cost debate 8.3 communication costs 2 development de africa.*.