Perhaps you should try some spelling variations:
trade developpement » trade developement, trade development, de developpement
technologies based » technologies used, technology based, technologies a
based formulation » basic formulation, case formulation, based simulation
formulation where » formulation over, formulation des, calculation where
developpement de » developpement des, developpement durable
communication 1 » communication _, communication a, communication 3
where does » where do
de afrique » de l'afrique, en afrique, l afrique
1 trade » 4 trade

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

• Adding a wildcard symbol may retrieve word variants: technologies based formulation where does _ communication 1 trade developpement de afrique.*.