Perhaps you should try some spelling variations:
vaccine communication » machine communications, active communication, reactive communication
technologies series » technology series
series information » business information
leur developpement » le developpement, deux developpements, de developpement
developpement de » developpement des, developpement durable
information 3 » information 2
die vaccine » dose vaccine, hiv vaccine, fiv vaccine
de afrique » de l'afrique, en afrique, l afrique
3 die » 2 die, _ die

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

• Adding a wildcard symbol may retrieve word variants: technologies series information 3 die vaccine communication a leur developpement de afrique.*.