Perhaps you should try some spelling variations:
biased transfers » based transfer, basin transfers, related transfers
based transfers » basin transfers, cash transfers, land transfers
sea transport » road transport, bus transport
transport air » transport a, transport data, transport _
aguas da » aguas de, aguas do, aguas del
guide a » guide _
da sea » dead sea, dark sea
air a » air _, ai 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: (( aguas da sea transport air a ) OR ( guide a ((biased transfers) OR (based transfers)) _ a ))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( aguas da sea transport air a ) or ( guide a ((biased transfers) OR (based transfers)) _ a ))~".
• Adding a wildcard symbol may retrieve word variants: (( aguas da sea transport air a ) or ( guide a ((biased transfers) OR (based transfers)) _ a ))*.