Perhaps you should try some spelling variations:
technological changes » technological change, technological advances
chaines communication » chairs communication, change communication, causes communication
changes information » change information, channels information, chandos information
de developpement » sme development
developpement l » developpement il, developpement la, developpement de
de chaines » des chaines, de charges, de charles
l afrique » en afrique
3.2 de » 3.2 die, 3.2 der, 3.2 dem

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

• Adding a wildcard symbol may retrieve word variants: technological changes information 3.2 de chaines communication _ de developpement l afrique.*.