Perhaps you should try some spelling variations:
transport code » transport mode, transport modes, transport model
sea transport » road transport, bus transport
mass transfer » cash transfer, basin transfer, mass transport
transfer a » transfer _, transfer 3, transfer 4
case sea » case s0, case sub
bias due » bias die, bias der, bias des
due mass » does mass, dull mass, ice mass
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 case sea transport code _ ) OR ( bias due mass transfer a a ))~.
• Adding a wildcard symbol may retrieve word variants: (( areas case sea transport code _ ) or ( bias due mass transfer a a ))*.