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