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

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

• Adding a wildcard symbol may retrieve word variants: technologies 2 formulation where do _ communication a des developpement de afrique.*.