Perhaps you should try some spelling variations:
opec communication » open communication, optic communication, ec communication
does developpement » de developpement, des developpements, does development
developpement en » developpement et, developpement des, developpement de
variations des » variation des, variationen des, variations west
die opec » die open, die oper, die opfer
des die » es die, des diw, des dix
a does » 2 does, 4 does, 1 does

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

• Adding a wildcard symbol may retrieve word variants: typology _ variations des die opec communication a does developpement en afrique.*.