Perhaps you should try some spelling variations:
5.4 communication » de communication, data communication
developpement en » developpement et, developpement des, developpement de
inflation wages » inflation rates, inflation taxes, inflation targets
4 developpement » de developpement, le developpement, et developpement
technology die » technologie die, technology does, technology 4ir
die inflation » does inflation, der inflation, price inflation
wages case » ages case, wages close, cases case
case 5.4 » case 5.2, case 5.3, case 1.4
costs 4 » costs _, costs a, costs 4.2

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

• Adding a wildcard symbol may retrieve word variants: technology die inflation wages case 5.4 communication costs 4 developpement en afrique.*.