Perhaps you should try some spelling variations:
vaccine communication » machine communications, active communication, reactive communication
communication policy » telecommunication policy, telecommunications policy, communication protocol
de developpement » sme development
developpement l » developpement il, developpement la, developpement de
technologies 2 » technologies _, technologies 4
information 2 » information 3
7.1 vaccine » 5.1 vaccine, 5.12 vaccine, 11 vaccine
policy de » policy del, policy does, policy dale
l afrique » en afrique
2 7.1 » 2 7.10, a 7.1, _ 7.1

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

• Adding a wildcard symbol may retrieve word variants: technologies 2 information 2 7.1 vaccine communication policy de developpement l afrique.*.