Perhaps you should try some spelling variations:
crisis communication » risk communication, mass communication
grade separation » grade repetition, waste separation, a separation
separation among » separation using, starvation among, cooperation among
l developpement » le developpement, de developpement, et developpement
des afrique » en afrique, de l'afrique
its crisis » aids crisis, its critics, las crisis
among its » among idps, among ers, among idp
a l » a la
typologie » typologies, typology

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

• Adding a wildcard symbol may retrieve word variants: typologie grade separation among its crisis communication a l developpement des afrique.*.