Perhaps you should try some spelling variations:
actors communication » actions communication, active communication, networks communication
development towns » development tools, development towards, development trends
technologies new » technologies _, technologies 4, technologies 2
information case » information based, information can, information costs
new information » 2 information
3 development » 2 development
towns africa » works africa
4.1 actors » 4.4 actors, 2.2 actors, 6.4 actors
case 4.1 » case 4.2, case 1
media 3 » media _, media 1, media 4

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

• Adding a wildcard symbol may retrieve word variants: technologies new information case 4.1 actors communication media 3 development towns africa.*.