Perhaps you should try some spelling variations:
formulation where » formulation over, formulation des, calculation where
developpement et » developpement des, developpement de, development east
technologies a » technologies _, technologies 4, technologies 2
a formulation » la formulation, _ formulation, 3 formulation
where does » where do
et afrique » en afrique, l afrique
r d1 » r d
r 1 » nr 1, rq 1, ar 1

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "technologies a formulation where does _ communication ((r d1) OR (r 1)) developpement et afrique.~".
• Adding a wildcard symbol may retrieve word variants: technologies a formulation where does _ communication ((r d1) OR (r 1)) developpement et afrique.*.