Perhaps you should try some spelling variations:
transport code » transport mode, transport modes, transport model
sub transport » bus transport, sea transport, du transport
cash transfer » cash transfers
case sub » case sums, case s0
bias due » bias die, bias der, bias des
due cash » does cash, idle cash, due care

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 sub transport code _ ) OR ( bias due cash transfer ((a a) OR (a la)) ))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( areas case sub transport code _ ) or ( bias due cash transfer ((a a) OR (a la)) ))~".
• Adding a wildcard symbol may retrieve word variants: (( areas case sub transport code _ ) or ( bias due cash transfer ((a a) OR (a la)) ))*.