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
bias due » bias die, bias der, bias des
due mass » does mass, dull mass, ice mass
case b » case 1, case 2, case 3
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 big) OR (case b)) transport code _ ) OR ( bias due mass transfer a a ))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( areas ((case big) OR (case b)) transport code _ ) or ( bias due mass transfer a a ))~".
• Adding a wildcard symbol may retrieve word variants: (( areas ((case big) OR (case b)) transport code _ ) or ( bias due mass transfer a a ))*.