Perhaps you should try some spelling variations:
teachers communication » teacher communication, teaching communication, actors communication
au developpement » du developpement, de developpement, le developpement
communication 3 » communication _, communication a
developpement l » developpement il, developpement la, developpement de
der teachers » older teachers, under teachers, per teacher
6 variation » 6 variations, _ variation, 2 variation
typology 6 » typology _, typology 4.1
l afrique » en afrique
3 au » 3 auf, 3 a, 3 zu

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

• Adding a wildcard symbol may retrieve word variants: typology 6 variation _ der teachers communication 3 au developpement l afrique.*.