Perhaps you should try some spelling variations:
crisis communication » risk communication, mass communication
developpement l » developpement il, developpement la, developpement de
de variations » de variation, 1er variations, ier variations
typologie de » typologie des, typologie der, typologien der
der crisis » der krisis, de crisis, under crisis
l afrique » en afrique
a set » _ set
a et » a net, a bet, a jet

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 variations _ der crisis communication ((a et) OR (a set)) developpement l afrique.~".
• Adding a wildcard symbol may retrieve word variants: typologie de variations _ der crisis communication ((a et) OR (a set)) developpement l afrique.*.