Perhaps you should try some spelling variations:
oral communication » personal communication
leur developpement » le developpement, deux developpements, de developpement
variation series » education series, action series, edition series
developpement l » developpement il, developpement la, developpement de
series de » series d, series e, series new
l afrique » en afrique
de oral » de otras, new oral

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

• Adding a wildcard symbol may retrieve word variants: typology _ variation series de oral communication a leur developpement l afrique.*.