Perhaps you should try some spelling variations:
leur developpement » le developpement, deux developpements, de developpement
5.3 communication » 2.3 communication, 4.3 communication, 1.3 communication
developpement en » developpement et, developpement des, developpement de
technology rate » technology state, technology role, technology related
rate inflation » grade inflation, wage inflation, age inflation
inflation tax » inflation rate, inflation _, inflation target
policy 5.3 » policy 3.3, policy 2.3, policy 4.3
costs leur » costs clear

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

• Adding a wildcard symbol may retrieve word variants: technology rate inflation tax policy 5.3 communication costs leur developpement en afrique.*.