Perhaps you should try some spelling variations:
transfers reduce » transfers reducing, transfers reach, transfer resource
green transport » urban transport, carbon transport
cost transfers » cost transfer, cash transfers, cast transfer
transport a » transport _, transport data
reduce cao » reduced cap, reduce tax, reduce carbon
use cost » user cost, user costs, use case
bus use » bus users
f green » a green, 2 green, 1 green
a macao » a macro, _ macao

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (( bus use cost transfers reduce cao ) or ( luis f green transport a macao ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( bus use cost transfers reduce cao ) OR ( luis f green transport a macao )).
• Adding a wildcard symbol may retrieve word variants: (( bus use cost transfers reduce cao ) or ( luis f green transport a macao ))*.