Perhaps you should try some spelling variations:
3.2 communication » 3 communication, 2.3 communication, de communication
inflation target » inflation targeting, inflation rate, inflation rates
developpement il » developpement de, developpement et, developpement du
technology gaps » technology gap
gaps inflation » has inflation, grade inflation, rapid inflation
target rice » target price, target prices, target rate
il afrique » l afrique, en afrique
rice 3.2 » price 3.2, rice 3.1, rice 3.3

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

• Adding a wildcard symbol may retrieve word variants: technology gaps inflation target rice 3.2 communication costs _ developpement il afrique.*.