Perhaps you should try some spelling variations:
information class » information classes, information case, information costs
8.3 communication » 2.3 communication, 4.3 communication, 1.3 communication
technologies new » technologies _, technologies 4, technologies 2
new information » 2 information
development de » development d, development ds, developpement de
class debate » grass debatte, class state, care debate
debate 8.3 » debate 3, debate 2.1, debate 4.2
de africa » does africa, de america, use africa

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

• Adding a wildcard symbol may retrieve word variants: technologies new information class debate 8.3 communication costs _ development de africa.*.