Perhaps you should try some spelling variations:
face communication » voice communication, de communication, time communication
development en » developpement en, development menu, development eco
typologie fur » typologie der, typologie auf, typologie wird
fur variation » four variation, zur variation, der variation
de face » der face, die face, we face
2 trade » 1 trade
4 trade » 1 trade

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: "typologie fur variation _ de face communication ((2 trade) OR (4 trade)) development en afrique.~".
• Adding a wildcard symbol may retrieve word variants: typologie fur variation _ de face communication ((2 trade) OR (4 trade)) development en afrique.*.