Perhaps you should try some spelling variations:
based transfers » basin transfers, cash transfers, land transfers
transport mode » transport modes
guias les » guide les, guias de
les based » les bases, aes based, ses based
keys rsa » des rsa
der rsa » dem 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) OR (der rsa)) transport mode a ) OR ( guias les based transfers _ a ))~.
• Adding a wildcard symbol may retrieve word variants: (( value ((keys rsa) or (der rsa)) transport mode a ) or ( guias les based transfers _ a ))*.