Perhaps you should try some spelling variations:
formulation where » formulation over, formulation des, calculation where
developpement en » developpement et, developpement des, developpement de
3 developpement » de developpement, le developpement, et developpement
technologies 2 » technologies _, technologies 4
2 formulation » _ formulation, 3 formulation, la formulation
so mobile » go mobile, non mobile, how mobile
where so » where do, here so, where you

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 so mobile communication _ 3 developpement en afrique.*.