Perhaps you should try some spelling variations:
opec communication » open communication, optic communication, ec communication
des developpements » deux developpements, de developpement, et developpements
developpements il » developpement il, developpements de, developpement de
variation es » variation des, variation test, variations des
il afrique » l afrique, en afrique
die opec » die open, die oper, die opfer
a des » a der, a das

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

• Adding a wildcard symbol may retrieve word variants: typology _ variation es die opec communication a des developpements il afrique.*.