Perhaps you should try some spelling variations:
based transfers » basin transfers, cash transfers, land transfers
transport mode » transport modes
rsa transport » road transport, sea transport, a transport
value keys » values key
keys rsa » des rsa
guias de » guia de, guide de, aguas de
de based » dge based, de base, de bases
mode a » mode ad, mode _, code a

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: (( value keys rsa transport mode a ) OR ( guias de based transfers _ a ))~.
• Adding a wildcard symbol may retrieve word variants: (( value keys rsa transport mode a ) or ( guias de based transfers _ a ))*.