Perhaps you should try some spelling variations:
des developpement » des developpements, de developpement, le developpement
developpement l » developpement il, developpement la, developpement de
der variation » de variation, does variation, die variation
typology der » typologie der, typologien der, typologie des
der tropen » den tropen, der treppen, die tropen
l afrique » en afrique
der open » der oper, der 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 der variation _ ((der open) OR (der tropen)) communication a des developpement l afrique.~".
• Adding a wildcard symbol may retrieve word variants: typology der variation _ ((der open) OR (der tropen)) communication a des developpement l afrique.*.