Perhaps you should try some spelling variations:
de developpement » sme development
developpement de » developpement des, developpement durable
die variation » de variation, does variation, der variation
apologie die » apologia de, apologie des, apologien der
dorner a » corner _, korner i, corner i
doner a » done a
a de » a die, a der, a des

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: "apologie die variation _ ((doner a) OR (dorner a)) communication a de developpement de l'afrique.~".
• Adding a wildcard symbol may retrieve word variants: apologie die variation _ ((doner a) OR (dorner a)) communication a de developpement de l'afrique.*.