Perhaps you should try some spelling variations:
does development » dams development, ides development, smes development
communication 4 » communication _, communication a, communication 3
development de » development d, development ds, developpement de
variation 6 » variation _, variations _, variation des
4 does » 2 does
dr ec » dr em, dr sc
dr et » dr em, fr et, ur et

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

• If you are trying to use Boolean operators, they must be ALL CAPS: typology _ variation 6 ((dr ec) OR (dr et)) communication 4 does development de l'afrique.~.
• Adding a wildcard symbol may retrieve word variants: typology _ variation 6 ((dr ec) or (dr et)) communication 4 does development de l'afrique.*.