Perhaps you should try some spelling variations:
le developpement » de developpement, sme development
developpement de » developpement des, developpement durable
technologies 2 » technologies _, technologies 4
formulation de » formulation des, formulacion de, formulation du
2 formulation » _ formulation, 3 formulation, la formulation
de afrique » de l'afrique, en afrique, l afrique
how 14 » how 15, how 24, how 14.6
how 12 » how 15
a le » a les, a la, a l

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 2 formulation de ((how 14) OR (how 12)) communication a le developpement de afrique.~".
• Adding a wildcard symbol may retrieve word variants: technologies 2 formulation de ((how 14) OR (how 12)) communication a le developpement de afrique.*.