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
communication 4 » communication _, communication a, communication 3
typologien der » typologie der, typologie des, apologien der
der variations » der variation, 1er variations, ier variations
der opec » der oper, des opec, der opfer
4 does » 2 does

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

• Adding a wildcard symbol may retrieve word variants: typologien der variations _ der opec communication 4 does developpement en afrique.*.