Perhaps you should try some spelling variations:
11.3 communication » 1.3 communication, 11.6 communication, 6.1.3 communication
developpement en » developpement et, developpement des, developpement de
technology 2 » technology _, technology 1, technology 3
2 inflation » 12 inflation, _ inflation, 6 inflation
rate space » state space, trace space, safe space
space 11.3 » spaces 11.3, space 11.5, space 1.3

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

• Adding a wildcard symbol may retrieve word variants: technology 2 inflation rate space 11.3 communication costs _ developpement en afrique.*.