Perhaps you should try some spelling variations:
developpement en » developpement et, developpement des, developpement de
separation using » operation using, separation among, separation und
l developpement » le developpement, de developpement, et developpement
der separation » order separation, air separation, ree separation
ideologie der » ideologie und, typologie der
less risk » less risky, lens risk, loss risk
a l » a la

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

• Adding a wildcard symbol may retrieve word variants: ideologie der separation using less risk communication a l developpement en afrique.*.