Perhaps you should try some spelling variations:
technologies authors » technologies methods, technologies cohort, technology author
formulation where » formulation over, formulation des, calculation where
de developpement » sme development
developpement de » developpement des, developpement durable
where does » where do
de afrique » de l'afrique, en afrique, l afrique
a de » a die, a der, a des

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

• Adding a wildcard symbol may retrieve word variants: technologies authors formulation where does _ communication a de developpement de afrique.*.