Perhaps you should try some spelling variations:
development economiques » developpement economique (Expand Search)
organisation de » organisation des (Expand Search), organisation du (Expand Search), reorganisation de (Expand Search)
de cooperation » de cooperacion (Expand Search), _ cooperation (Expand Search), de cooperativa (Expand Search)
cooperation et » cooperation en (Expand Search), cooperation egtc (Expand Search), cooperation des (Expand Search)