Perhaps you should try some spelling variations:
stroke communication » prone communication, spoken communication, style communication
leur developpement » le developpement, deux developpements, de developpement
technology being » technology brings, technology using, technology blazing
developpement de » developpement des, developpement durable
active learning » machine learning
learning event » learning events, learning levels, learning effect
being active » becoming active, during active, being agile
event stroke » every stroke, deft stroke, event stream
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 active learning event stroke communication a leur developpement de africa.*.