Perhaps you should try some spelling variations:
deux developpements » des developpements, de developpement, du developpement
2.1 communication » 2.14 communication, 2.3 communication, 2.7 communication
developpements en » developpement en, developpement et, developpements de
technology log » technology lag, technology low, technology law
log inflation » low inflation, local inflation, lower inflation
rate spaces » state spaces, data spaces, safe spaces
spaces 2.1 » space 2.1, spaces 1.1, spaces 1

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

• Adding a wildcard symbol may retrieve word variants: technology log inflation rate spaces 2.1 communication a deux developpements en afrique.*.