Perhaps you should try some spelling variations:
developpement urban » development urban, developpement rural, developpement durable
oral communication » personal communication
die developpement » de developpement, le developpement, du developpement
information need » information needs, information needed, information speed
communication 1 » communication _, communication a, communication 3
urban africa » urban area
1 die » 2 die, 3 die, _ die

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

• Adding a wildcard symbol may retrieve word variants: technologies _ information need more oral communication 1 die developpement urban africa.*.