Perhaps you should try some spelling variations:
transport design » transport decisions, transport demand
sea transport » road transport, bus transport
transfers 6 » transfers _, transfers 3, transfers 2
guias pde » guias de, guia de
pde cash » pde case, idle cash, de cas
own sea » own ses, own seed, own real
6 case » 2 case

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: (( (aguas OR agua) own sea transport design 4 ) OR ( guias pde cash transfers 6 case ))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( (aguas OR agua) own sea transport design 4 ) or ( guias pde cash transfers 6 case ))~".
• Adding a wildcard symbol may retrieve word variants: (( (aguas OR agua) own sea transport design 4 ) or ( guias pde cash transfers 6 case ))*.