Perhaps you should try some spelling variations:
4.2 communication » 4.2 communications, 3.2 communication, 4.1 communication
amy developpement » au developpement, de developpement, le developpement
developpement en » developpement et, developpement des, developpement de
inflation wages » inflation rates, inflation taxes, inflation targets
wages case » ages case, wages close, cases case
costs amy » costs a
case 4.2 » case 4.1, case 2

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

• Adding a wildcard symbol may retrieve word variants: technologie _ inflation wages case 4.2 communication costs amy developpement en afrique.*.