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

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 _ en developpement en afrique.*.