Perhaps you should try some spelling variations:
developpement durable » developpement de
leur developpement » le developpement, deux developpements, de developpement
oral communication » personal communication
information needs » information networks
can information » von information, von informationen
technology can » technology change, technology 1, technology 2.2
durable africa » rural africa
needs 2 » needs _, needs a, needs 3
2 oral » _ oral, 4 oral

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

• Adding a wildcard symbol may retrieve word variants: technology can information needs 2 oral communication a leur developpement durable africa.*.