Perhaps you should try some spelling variations:
transport code » transport mode, transport modes, transport model
cash transfer » cash transfers
transfer a » transfer _, transfer 3, transfer 4
case sums » parse sums
case sub » case s0
bias due » bias die, bias der, bias des
due cash » does cash, idle cash, due care
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 sub) OR (case sums)) transport code _ ) OR ( bias due cash transfer a a ))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( areas ((case sub) OR (case sums)) transport code _ ) or ( bias due cash transfer a a ))~".
• Adding a wildcard symbol may retrieve word variants: (( areas ((case sub) OR (case sums)) transport code _ ) or ( bias due cash transfer a a ))*.