Perhaps you should try some spelling variations:
egal communication » oral communication, real communication, verbal communication
education systems » education system
el developpement » et developpement, en developpement, et developpements
peer education » teacher education, higher education
systems doch » systems durch, systems do, systems doing
des afrique » en afrique, de l'afrique

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

• Adding a wildcard symbol may retrieve word variants: typology peer education systems doch egal communication _ el developpement des afrique.*.