Perhaps you should try some spelling variations:
developpement durable » developpement de
formulation over » formation over, formulation model, formulation where
technologies co » technologies _, technologies 4, technologies 2
1 communication » 10 communication, 3 communication, 4 communication
communication 2 » communication _, communication a, communication 3
1 developpement » de developpement, le developpement, et developpement
co formulation » _ formulation, 3 formulation, 2 formulation
over does » cover does, der does, over de
does 1 » does _, does a, does e

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

• Adding a wildcard symbol may retrieve word variants: technologies co formulation over does 1 communication 2 1 developpement durable afrique.*.