Perhaps you should try some spelling variations:
change information » chandos information, trade information
technology change » technological change, technological changes
information rates » information states, information ratio, information rules
de communication » mobile communication, online communication
developpement en » developpement et, developpement des, developpement de
rates case » rates cape, states case, rates east
case de » case des, case d, case d1

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

• Adding a wildcard symbol may retrieve word variants: technology change information rates case de communication costs _ developpement en afrique.*.