Perhaps you should try some spelling variations:
developpement du » developpement de, developpement des, developpement et
communication 1 » communication _, communication a, communication 3
3 developpement » de developpement, le developpement, et developpement
variation 6 » variation _, variations _, variation des
firms oral » firms rural, firms global
firms deal » firms legal, firms health, firms really
du afrique » en afrique, l afrique, de l'afrique

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "typology _ variation 6 ((firms oral) OR (firms deal)) communication 1 3 developpement du afrique.~".
• Adding a wildcard symbol may retrieve word variants: typology _ variation 6 ((firms oral) OR (firms deal)) communication 1 3 developpement du afrique.*.