Perhaps you should try some spelling variations:
der developpements » des developpements, deux developpements, de developpement
population rates » population debates, population related, population data
developpements l » developpements de, developpement il, developpement la
technology than » technology tax, technology trap, technology change
than population » change population, orphan population, urban population
4 communication » 3 communication, 5.4 communication, de communication
communication 3 » communication _, communication a
rates spaces » places spaces, papers spaces, spaces spaces
l afrique » en afrique
spaces 4 » spaces _, spaces 3, spaces 1
3 der » _ der, 2 der

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

• Adding a wildcard symbol may retrieve word variants: technology than population rates spaces 4 communication 3 der developpements l afrique.*.