Perhaps you should try some spelling variations:
crisis communication » risk communication, mass communication
system developpement » system development, systems development, system developments
developpement en » developpement et, developpement des, developpement de
variation des » variation _, variation 6, variation series
typologie de » typologie des, typologie der, typologien der
de variation » der variation, die variation, does variation
deas crisis » debt crisis, las crisis, de crisis
des deas » des des, des degats, des delays

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

• Adding a wildcard symbol may retrieve word variants: typologie de variation des deas crisis communication _ system developpement en afrique.*.