Perhaps you should try some spelling variations:
crisis communication » risk communication, mass communication
les developpement » le developpement, des developpements, leur developpement
developpement en » developpement et, developpement des, developpement de
typologie de » typologie des, typologie der, typologien der
de variation » der variation, die variation, does variation
6 dead » a dead, 1 dead, 4 dead
_ dead » _ deal
a les » a lens, a less, 2 les

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "typologie de variation ((6 dead) OR (_ dead)) crisis communication a les developpement en afrique.~".
• Adding a wildcard symbol may retrieve word variants: typologie de variation ((6 dead) OR (_ dead)) crisis communication a les developpement en afrique.*.