Perhaps you should try some spelling variations:
2.7 communication » 2.3 communication, 3.2 communication, 2 communication
technology rapid » technology rate, technology road, technology trap
rapid population » world population
le developpement » de developpement, sme development
developpement en » developpement et, developpement des, developpement de
population base » population based, population case, population age
base prices » base price, gas prices, asset prices
prices 2.7 » prices 2.4, prices 2.1, prices 2.3
costs le » costs _, costs 4, costs a

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

• Adding a wildcard symbol may retrieve word variants: technology rapid population base prices 2.7 communication costs le developpement en afrique.*.