Perhaps you should try some spelling variations:
information science » information society, information service, information services
back information » bank information, pack information, lack information
science efficace » evidence efficacy, science africa, science escience
de communication » mobile communication, online communication
et developpement » de developpement, le developpement, test development
developpement la » developpement de, developpement et, developpement du
technology back » technology book, technology stacks, technology based
efficace de » efficace le, efficace les, efficace en
la afrique » l afrique, la fabrique, en afrique
a et » a set, a net, a bet

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

• Adding a wildcard symbol may retrieve word variants: technology back information science efficace de communication a et developpement la afrique.*.