Perhaps you should try some spelling variations:
communication cost » communication costs, communication costa, communications costs
basin development » asian development, chain development, business development
de communication » mobile communication, online communication
formulation des » formation des, formulacion de, formulation _
development min » development main, development menu, development may
min afrique » en afrique
cost basin » cost basis, post basic, cost based
des dx » des dax, des dix, des dr
dx de » d de, ix de, x de

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

• Adding a wildcard symbol may retrieve word variants: technologies _ formulation des dx de communication cost basin development min afrique.*.