Perhaps you should try some spelling variations:
population center » population census, population censuses, population change
3.2 communication » 3 communication, 2.3 communication, de communication
developpement de » developpement des, developpement durable
technology 1 » technology _
1 population » 2 population, 4 population, 2.1 population
center price » better price, center eric, center place
de afrique » de l'afrique, en afrique, l 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 center price 3.2 communication costs _ developpement de afrique.*.