Perhaps you should try some spelling variations:
population censuses » population census, population densities
3.2 communication » 3 communication, 2.3 communication, de communication
developpement il » developpement de, developpement et, developpement du
censuses price » consumer price
technology 1 » technology _
1 population » 2 population, 4 population, 2.1 population
il afrique » l afrique, en afrique
price 3.2 » prices 3.2, price 2.2, 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 1 population censuses price 3.2 communication costs _ developpement il afrique.*.