Perhaps you should try some spelling variations:
oral communication » personal communication
du developpement » de developpement, le developpement, et developpement
developpement de » developpement des, developpement durable
communication 1 » communication _, communication a, communication 3
variation des » variation _, variation 6, variation series
de variation » der variation, die variation, does variation
typology de » typology _, typology 6, typology a
des fires » des firmes, des figures, des formes
1 du » 1 due, 1 dum, 11 du

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

• Adding a wildcard symbol may retrieve word variants: typology de variation des fires oral communication 1 du developpement de l'afrique.*.