Perhaps you should try some spelling variations:
vaccine communication » machine communications, active communication, reactive communication
communication process » communication processes, communication protocols, communication practices
de developpement » sme development
developpement l » developpement il, developpement la, developpement de
information a » information age, information about
7.1 vaccine » 5.1 vaccine, 5.12 vaccine, 11 vaccine
process de » procesos de, process d, processus de
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 de developpement l afrique.*.