Perhaps you should try some spelling variations:
leur developpement » le developpement, deux developpements, de developpement
mask communication » mass communication, mass communications, risk communication
developpement en » developpement et, developpement des, developpement de
11 integration » 10 integration, 4.1 integration, 1.2 integration
technology 11 » technology 1.1, technology 110, technology 171
costs leur » costs clear
face mask » face masks, face case

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

• Adding a wildcard symbol may retrieve word variants: technology 11 integration _ face mask communication costs leur developpement en afrique.*.