Perhaps you should try some spelling variations:
formulation where » formulation over, formulation des, calculation where
der developpement » de developpement, des developpements, leur developpement
developpement de » developpement des, developpement durable
communication 3 » communication _, communication a
technologies 3 » technologies _, technologies 4, technologies 2
3 formulation » _ formulation, _ formulating
de afrique » de l'afrique, en afrique, l afrique
where do » where _
3 der » _ der, 2 der

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

• Adding a wildcard symbol may retrieve word variants: technologies 3 formulation where do _ communication 3 der developpement de afrique.*.