Perhaps you should try some spelling variations:
change information » chandos information, trade information
technology change » technological change, technological changes
6.2 communication » 3.2 communication, 2.3 communication, 2.7 communication
information when » information what, information war, information wants
des afrique » en afrique, de l'afrique
when face » when faced, en face, when base
face 6.2 » space 6.2, grace 6.2, face 2

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

• Adding a wildcard symbol may retrieve word variants: technology change information when face 6.2 communication costs _ developpement des afrique.*.