Perhaps you should try some spelling variations:
developpement durable » developpement de
die developpement » de developpement, le developpement, du developpement
formulation over » formation over, formulation model, formulation where
communication r » communication 3, communication 1, communication 2
technologies a » technologies _, technologies 4, technologies 2
a formulation » la formulation, _ formulation, 3 formulation
over do » over de, ever do, over die
r die » br die, 2 die, 3 die

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

• Adding a wildcard symbol may retrieve word variants: technologies a formulation over do _ communication r die developpement durable afrique.*.