Perhaps you should try some spelling variations:
3.2 communication » 3 communication, 2.3 communication, de communication
inflation causes » inflation crises, inflation rates, inflation taxes
developpement en » developpement et, developpement des, developpement de
technology die » technologie die, technology does, technology 4ir
die inflation » does inflation, der inflation, price inflation
causes case » crises case, causes costs
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 die inflation causes case 3.2 communication costs _ developpement en afrique.*.