Perhaps you should try some spelling variations:
de developpement » sme development
developpement en » developpement et, developpement des, developpement de
a communication » la communication, data communication, data communications
des doner » des der, des don, des dunes
des doses » des choses, des dorfes, des deces
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: "apology _ variation ((des doner) OR (des doses)) a communication a de developpement en afrique.~".
• Adding a wildcard symbol may retrieve word variants: apology _ variation ((des doner) OR (des doses)) a communication a de developpement en afrique.*.