Perhaps you should try some spelling variations:
leur developpement » le developpement, deux developpements, de developpement
3.2 communication » 3 communication, 2.3 communication, de communication
technology grade » technology trade, technology guides, technology gender
grade inflation » price inflation, trade information
inflation rates » inflation rate
developpement l » developpement il, developpement la, developpement de
rates case » rates cape, states case, rates east
costs leur » costs clear
l afrique » en afrique
case 3.2 » case 4.2, case 3.1, case 5.2

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

• Adding a wildcard symbol may retrieve word variants: technology grade inflation rates case 3.2 communication costs leur developpement l afrique.*.