Perhaps you should try some spelling variations:
world transformed » world transforming
transformed flows » transformer les, transport flows, transformed our
river transport » air transport, water transport, private transport
transport cost » transport costs
und world » fund world, undp world, 2nd world
sa und » usa und, rsa und, soa und
coda » code, cod, oda

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

• If you are trying to use Boolean operators, they must be ALL CAPS: (( sa und world transformed flows across ) OR ( language _ river transport cost coda ))~.
• Adding a wildcard symbol may retrieve word variants: (( sa und world transformed flows across ) or ( language _ river transport cost coda ))*.