Perhaps you should try some spelling variations:
technology transfers » technology transfer
transfers infection » transferts retention
die developpement » de developpement, le developpement, du developpement
developpement en » developpement et, developpement des, developpement de
4 communication » 3 communication, 5.4 communication, de communication
infection rate » infection rates, inflation rate
rate spaces » state spaces, data spaces, safe spaces
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 transfers infection rate spaces 4 communication _ die developpement en afrique.*.