Perhaps you should try some spelling variations:
opec communication » open communication, optic communication, ec communication
does development » dams development, ides development, smes development
des variation » does variation, de variation, der variation
variation 5 » variation _, variation 6, variation a
1 l'afrique » de l'afrique
das opec » des opec, das open, das oecd
5 das » 1 das, 2 das, 3 das
typologie » typologies, typology

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

• Adding a wildcard symbol may retrieve word variants: typologie des variation 5 das opec communication _ does development 1 l'afrique.*.