Perhaps you should try some spelling variations:
3.2 communication » 3 communication, 2.3 communication, de communication
developpement en » developpement et, developpement des, developpement de
technology rate » technology state, technology role, technology related
inflation taxes » inflation rates, inflation tax, inflation targets
rate inflation » grade inflation, wage inflation, age inflation
taxes space » tax space
space 3.2 » space 2.1

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

• Adding a wildcard symbol may retrieve word variants: technology rate inflation taxes space 3.2 communication costs _ developpement en afrique.*.