Perhaps you should try some spelling variations:
population factors » population facts, population sector, population centers
5.2 communication » 3.2 communication, 6.2 communication, 2.2 communication
technology dlt » technology data, technology debts, technology 21st
dlt population » adult population, de population, do population
factors prices » factor prices, factors process, factor price
a developing » a development
developing a » developing _
prices 5.2 » prices 3.2, prices 4.2, prices 8.2
a afrique » 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 dlt population factors prices 5.2 communication costs a developing a afrique.*.