Perhaps you should try some spelling variations:
developpement durable » developpement de
opec communication » open communication, optic communication, ec communication
does developpement » de developpement, des developpements, does development
typologien die » typologien der, typologie des, typologie der
die variation » de variation, does variation, der variation
variation 2 » variation 27, variation _, variation 6
der opec » der oper, des opec, der opfer
a does » 2 does, 4 does, 1 does
2 der » _ der

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

• Adding a wildcard symbol may retrieve word variants: typologien die variation 2 der opec communication a does developpement durable l'afrique.*.