Perhaps you should try some spelling variations:
opec communication » open communication, optic communication, ec communication
ten developpement » en developpement, de developpement, le developpement
developpement de » developpement des, developpement durable
typologie die » typologie des, typologie der, theologie die
die variation » de variation, does variation, der variation
variation a » variation _, variation 6, variation 5
des opec » der opec, des opnv
a des » a der, a das
a ten » _ ten

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

• Adding a wildcard symbol may retrieve word variants: typologie die variation a des opec communication a ten developpement de l'afrique.*.