Perhaps you should try some spelling variations:
crisis communication » risk communication, mass communication
developpement de » developpement des, developpement durable
des variation » does variation, de variation, der variation
typology des » typologie des, typologie der, typology _
does crisis » jobs crisis, does cross, fires crisis
de afrique » de l'afrique, en afrique, l afrique
a jet » a set, _ jet, a jew
a net » a new, _ net, a neo

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

• If you are trying to use Boolean operators, they must be ALL CAPS: typology des variation _ does crisis communication ((a jet) OR (a net)) developpement de afrique.~.
• Adding a wildcard symbol may retrieve word variants: typology des variation _ does crisis communication ((a jet) or (a net)) developpement de afrique.*.