Perhaps you should try some spelling variations:
aus developpement » au developpement, du developpement, ou developpement
minor irrigation » micro irrigation, minor variation, runoff irrigation
developpement en » developpement et, developpement des, developpement de
typologie minor » typologie eines, typologie einiger
irrigation der » irrigation under, irrigation user, irrigation les
does mass » does maps, does cash, does mtrs
a aus » _ aus, a auf, i aus

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

• Adding a wildcard symbol may retrieve word variants: typologie minor irrigation der does mass communication a aus developpement en afrique.*.