Perhaps you should try some spelling variations:
formulation model » circulation model, simulation model, population model
trade development » software development
communication 3 » communication _, communication a
technologies a » technologies _, technologies 4, technologies 2
development il » development ii, development iv, development ix
a formulation » la formulation, _ formulation, 3 formulation
model does » model codes, model deep, model dom
il afrique » l afrique, en afrique
3 trade » 1 trade, 4 trade, 2 trade

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

• Adding a wildcard symbol may retrieve word variants: technologies a formulation model does _ communication 3 trade development il afrique.*.