Perhaps you should try some spelling variations:
leur developpement » le developpement, deux developpements, de developpement
developpement de » developpement des, developpement durable
a communication » la communication, data communication, data communications
apologien die » apologien der, apologia de, apologie des
die variation » de variation, does variation, der variation
doner a » dorner a, done a

You may be able to get more results by adjusting your search query.

• Adding a wildcard symbol may retrieve word variants: apologien die variation _ doner a communication a leur developpement de l'afrique.*.