Perhaps you should try some spelling variations:
2.1 communication » 2.14 communication, 2.3 communication, 2.7 communication
et developpement » de developpement, le developpement, test development
developpement en » developpement et, developpement des, developpement de
technology gaps » technology gap
gaps inflation » has inflation, grade inflation, rapid inflation
rate space » state space, trace space, safe space
costs et » costs _, costs 4, costs a

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

• Adding a wildcard symbol may retrieve word variants: technology gaps inflation rate space 2.1 communication costs et developpement en afrique.*.