Perhaps you should try some spelling variations:
vaccine communication » machine communications, active communication, reactive communication
communication process » communication processes, communication protocols, communication practices
developpement il » developpement de, developpement et, developpement du
3 developpement » de developpement, le developpement, et developpement
information a » information age, information about
7.1 vaccine » 5.1 vaccine, 5.12 vaccine, 11 vaccine
il afrique » l afrique, en afrique
a 7.1 » a 4.1, a 6.1, a 2.1

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

• Adding a wildcard symbol may retrieve word variants: technologies _ information a 7.1 vaccine communication process 3 developpement il afrique.*.