Perhaps you should try some spelling variations:
developpement de » developpement des, developpement durable
4 developpement » de developpement, le developpement, et developpement
technologies a » technologies _, technologies 4, technologies 2
a formulation » la formulation, _ formulation, 3 formulation
formulation 3 » formulation _, formulations _, formulating _
de afrique » de l'afrique, en afrique, l afrique
3 doing » _ doing, 5 doing
costs 4 » costs _, costs a, costs 4.2

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

• Adding a wildcard symbol may retrieve word variants: technologies a formulation 3 doing _ communication costs 4 developpement de afrique.*.