Perhaps you should try some spelling variations:
developpement durable » developpement de
leur developpement » le developpement, deux developpements, de developpement
infection rates » inflation rates
4 communication » 3 communication, 5.4 communication, de communication
technology 1 » technology _
rates spaces » places spaces, papers spaces, spaces spaces
1 infection » 19 infection, _ infection, 4 infection
spaces 4 » spaces _, spaces 3, spaces 1

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

• Adding a wildcard symbol may retrieve word variants: technology 1 infection rates spaces 4 communication a leur developpement durable afrique.*.