Perhaps you should try some spelling variations:
des developpement » des developpements, de developpement, le developpement
developpement l » developpement il, developpement la, developpement de
how variation » how valuation, does variation, four variation
typology how » typology from, typology _, typology 4.1
l afrique » en afrique
der open » der oper, der tropen, der opfer
der opec » der oper, des opec, der opfer
a des » a der, a das

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "typology how variation _ ((der open) OR (der opec)) communication a des developpement l afrique.~".
• Adding a wildcard symbol may retrieve word variants: typology how variation _ ((der open) OR (der opec)) communication a des developpement l afrique.*.