Perhaps you should try some spelling variations:
transport code » transport modes, transport model, transport cost
transport mode » transport modes
mass transfer » cash transfer, basin transfer, mass transport
transfer a » transfer _, transfer 3, transfer 4
case bus » case b, case big
bias ice » bias time, bts ice, bias die
ice mass » ice masses, ice caps
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 bus ((transport code) OR (transport mode)) _ ) OR ( bias ice mass transfer a a ))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( areas case bus ((transport code) OR (transport mode)) _ ) or ( bias ice mass transfer a a ))~".
• Adding a wildcard symbol may retrieve word variants: (( areas case bus ((transport code) OR (transport mode)) _ ) or ( bias ice mass transfer a a ))*.