Perhaps you should try some spelling variations:
crisis communication » risk communication, mass communication
developpement l » developpement il, developpement la, developpement de
der separation » order separation, air separation, ree separation
separation und » separation unit, separation index, separation using
ideologie der » ideologie und, typologie der
les crisis » las crisis, les crises, its crisis
l afrique » en afrique
und les » und le, und leo, und lesen
a bet » a best, a bent, a beta
a et » a set, a net, 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: "ideologie der separation und les crisis communication ((a et) OR (a bet)) developpement l afrique.~".
• Adding a wildcard symbol may retrieve word variants: ideologie der separation und les crisis communication ((a et) OR (a bet)) developpement l afrique.*.