Perhaps you should try some spelling variations:
population center » population census, population censuses, population change
5.2 communication » 3.2 communication, 6.2 communication, 2.2 communication
technology de » technology does, technology dlt, technology 1
de population » do population, deer population, does population
center prices » center prcec, center parties, center protest
a developing » a development
developing l » developing l2, developing _, developing a
prices 5.2 » prices 3.2, prices 4.2, prices 8.2
l afrique » en afrique
costs a » costs _, costs 4

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

• Adding a wildcard symbol may retrieve word variants: technology de population center prices 5.2 communication costs a developing l afrique.*.