Perhaps you should try some spelling variations:
leur developpement » le developpement, deux developpements, de developpement
6.2 communication » 3.2 communication, 2.3 communication, 2.7 communication
developpement en » developpement et, developpement des, developpement de
technology case » technology based, technology can, technology change
case inflation » cases inflation, core inflation, wage inflation
rate space » state space, trace space, safe space
space 6.2 » spaces 6.2, space 3.2, space 2.2

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

• Adding a wildcard symbol may retrieve word variants: technology case inflation rate space 6.2 communication _ leur developpement en afrique.*.