Perhaps you should try some spelling variations:
communication based » communication united, communication brazil, communication barriers
leur developpement » le developpement, deux developpements, de developpement
technology trade » technology trends, technology transfer, technology transfers
trade sanctions » trade transactions
sanctions cause » sanctions case, reactions causes
developpement l » developpement il, developpement la, developpement de
cause whose » change whose, nature whose
l afrique » en afrique

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

• Adding a wildcard symbol may retrieve word variants: technology trade sanctions cause whose _ communication based leur developpement l afrique.*.