Perhaps you should try some spelling variations:
technological changes » technological change, technological advances
based communication » brand communication, based compensation, mediated communication
leur developpement » le developpement, deux developpements, de developpement
changes reduction » change education, range reduction, changes prevention
developpement de » developpement des, developpement durable
reduction a » reduction _
rice based » price based, rule based, face based
de africa » does africa, de america, use africa
a rice » _ rice, a rich, 3 rice

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

• Adding a wildcard symbol may retrieve word variants: technological changes reduction a rice based communication a leur developpement de africa.*.