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
transfer a » transfer _, transfer 3, transfer 4
case sub » case sums, case s0
bias due » bias der, bias des, bias re
bias die » bias time, bias der, bias des
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 transport code _ ) OR ( ((bias due) OR (bias die)) cash transfer a a ))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( areas case sub transport code _ ) or ( ((bias due) OR (bias die)) cash transfer a a ))~".
• Adding a wildcard symbol may retrieve word variants: (( areas case sub transport code _ ) or ( ((bias due) OR (bias die)) cash transfer a a ))*.