Perhaps you should try some spelling variations:
land transport » road transport
cost transfer » cast transfer, court transfer, cash transfer
transfer 3 » transfer _, transfer 4, transfer a
demand may » demand a, demand gap, demand mbale
user cost » user costs
bus user » bus users, bus use, bus usb
luis 1 » luis f, luis a, luis e
luis c » luis f
3 can » _ can

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: (( bus user cost transfer 3 can ) OR ( ((luis 1) OR (luis c)) land transport demand may ))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( bus user cost transfer 3 can ) or ( ((luis 1) OR (luis c)) land transport demand may ))~".
• Adding a wildcard symbol may retrieve word variants: (( bus user cost transfer 3 can ) or ( ((luis 1) OR (luis c)) land transport demand may ))*.