Perhaps you should try some spelling variations:
communications costs » communication costs, communications _
3.1 communications » 3.1 communication, 4.1 communication, 1.1 communication
technology rapid » technology rate, technology road, technology trap
rapid population » world population
population under » population center, population fund, population de
developpement l » developpement il, developpement la, developpement de
under prices » user prices, under rice, under services
prices 3.1 » prices 2.1, prices 3.2, prices 2.3.1
l afrique » en afrique

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

• Adding a wildcard symbol may retrieve word variants: technology rapid population under prices 3.1 communications costs _ developpement l afrique.*.