Perhaps you should try some spelling variations:
transport data » transport demand
sea transport » road transport, bus transport
areas coal » areas can, areas co
a transfer » cash transfer, heat transfer, data transfer
transfer 4 » transfer _, transfer 3, transfer a
bias time » bias die, das time, his time
coal sea » coal seam, coal seams, coal use
time a » time _
4 do » _ do, 1 do, i do

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 coal sea transport data _ ) OR ( bias time a transfer 4 do ))~.
• Adding a wildcard symbol may retrieve word variants: (( areas coal sea transport data _ ) or ( bias time a transfer 4 do ))*.