Perhaps you should try some spelling variations:
et developpement » de developpement, le developpement, test development
typologies 3 » typologies _, typologies 2.3, typologies 3.2
3 variation » 3 variations, 2 variation, 4 variation
de afrique » de l'afrique, l afrique
dem risk » dam risk, dem risiko, term risk
a et » a set, a net, a bet

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: "typologies 3 variation _ dem risk communication a et developpement ((de afrique) OR (en afrique)).~".
• Adding a wildcard symbol may retrieve word variants: typologies 3 variation _ dem risk communication a et developpement ((de afrique) OR (en afrique)).*.