Perhaps you should try some spelling variations:
3.2 communication » 3 communication, 2.3 communication, de communication
inflation wages » inflation rates, inflation taxes, inflation targets
developpement l » developpement il, developpement la, developpement de
technology 4.1 » technology 3.1, technology 2.1, technology 1
4.1 inflation » 5.4.1 inflation, 2.3 inflation, 3.2 inflation
wages race » wages trade, wage rate, wages case
l afrique » en afrique
race 3.2 » race 3.7, race 4.2, rice 3.2

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

• Adding a wildcard symbol may retrieve word variants: technology 4.1 inflation wages race 3.2 communication costs _ developpement l afrique.*.