Perhaps you should try some spelling variations:
transport fuels » transport fuel, transport fares, transport access
based transfer » based transfers, basin transfer, basin transfers
sea transport » road transport, bus transport
areas coal » areas can, areas co
coal sea » coal seam, coal seams, coal use
guias de » guia de, guide de, aguas de
de based » dge based, de base, de bases
fuels a » fuels _, fuel a, fuels 4
4 do » 1 do, i do, 2 do

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: (( areas coal sea transport fuels a ) OR ( guias de based transfer ((4 do) OR (_ do)) ))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( areas coal sea transport fuels a ) or ( guias de based transfer ((4 do) OR (_ do)) ))~".
• Adding a wildcard symbol may retrieve word variants: (( areas coal sea transport fuels a ) or ( guias de based transfer ((4 do) OR (_ do)) ))*.