Perhaps you should try some spelling variations:
transport code » transport mode, transport modes, transport model
mass transfer » cash transfer, basin transfer, mass transport
transfer a » transfer _, transfer 3, transfer 4
ocean sea » mean sea
bias dull » bias due
can sea » can see, cnn sea, can speak
a a » a la

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: (( areas ((can sea) OR (ocean sea)) transport code _ ) OR ( bias dull mass transfer a a ))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( areas ((can sea) OR (ocean sea)) transport code _ ) or ( bias dull mass transfer a a ))~".
• Adding a wildcard symbol may retrieve word variants: (( areas ((can sea) OR (ocean sea)) transport code _ ) or ( bias dull mass transfer a a ))*.