Perhaps you should try some spelling variations:
crisis communication » risk communication, mass communication
developpement de » developpement des, developpement durable
separation unit » separation und, separation using, generation unit
l developpement » le developpement, de developpement, et developpement
air separation » a separation, after separation, first separation
typologie air » typologie wird, typologie der, typologie am
les crisis » las crisis, les crises, its crisis
de afrique » de l'afrique, en afrique, l afrique
unit les » unit test, unit net, unit vs
a l » a la

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

• Adding a wildcard symbol may retrieve word variants: typologie air separation unit les crisis communication a l developpement de afrique.*.