Perhaps you should try some spelling variations:
open communication » human communication, 3 communication, 4 communication
leur developpement » le developpement, deux developpements, de developpement
technology being » technology brings, technology using, technology blazing
developpement de » developpement des, developpement durable
which learning » rich learning, while learning, teach learning
learning event » learning events, learning levels, learning effect
being which » being white, dying which, making which
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: technology being which learning event open communication a leur developpement de africa.*.