Perhaps you should try some spelling variations:
communication cost » communication costs, communication costa, communications costs
change information » chandos information, trade information
technology change » technological change, technological changes
information cases » information case, information classes, information costs
5.2 communication » 3.2 communication, 6.2 communication, 2.2 communication
development led » development lid, development leads, development land
cs development » cns development, gas development, its development
led afrique » en afrique, l afrique
cases case » causes case, case case, crises case
case 5.2 » case 4.2, case 3.2, case 2
cost cs » cost lcc

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

• Adding a wildcard symbol may retrieve word variants: technology change information cases case 5.2 communication cost cs development led afrique.*.