Perhaps you should try some spelling variations:
transport mode » transport modes
rsa transport » road transport, sea transport, a transport
value keys » values key
les based » les bases, ses based, rules based
aes based » ses based, areas based, cases based
keys rsa » des rsa
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 ((les based) OR (aes based)) transfer _ a ))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( value keys rsa transport mode a ) or ( guias ((les based) OR (aes based)) transfer _ a ))~".
• Adding a wildcard symbol may retrieve word variants: (( value keys rsa transport mode a ) or ( guias ((les based) OR (aes based)) transfer _ a ))*.