Perhaps you should try some spelling variations:
actors communication » actions communication, active communication, networks communication
development science » development since, development evidence, development scheme
region development » regional development, design development, asian development
information gaps » information gap
communication 3 » communication _, communication a
science africa » sciences africa, science advice, science efficace
2 actors » _ actors, 3 actors, 5 actors
3 region » 3 regions, 3t region, 3 regional
gaps 2 » gaps _, gaps 3, gaps 6

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

• Adding a wildcard symbol may retrieve word variants: technologies _ information gaps 2 actors communication 3 region development science africa.*.