Perhaps you should try some spelling variations:
4.1 communication » 4 communication, 2.3 communication, 3.2 communication
technology rate » technology state, technology role, technology related
developpement l » developpement il, developpement la, developpement de
rate inflation » grade inflation, wage inflation, age inflation
rate space » state space, trace space, safe space
space 4.1 » space 2.1, space 4.3, space 4.2
l afrique » en afrique

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

• Adding a wildcard symbol may retrieve word variants: technology rate inflation rate space 4.1 communication costs _ developpement l afrique.*.