Perhaps you should try some spelling variations:
china's transport » africa's transport, india's transport
transport data » transport demand
head transfer » heat transfer, heart transfer, load transfer
data macao » data macro
3 china's » _ china's
luis a » luis f, luis c
a head » _ head
luis 3 » luis f, luis c, luis e

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( luis a head transfer _ cat ) or ( luis 3 china's transport data macao ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( luis a head transfer _ cat ) OR ( luis 3 china's transport data macao )).
• Adding a wildcard symbol may retrieve word variants: (( luis a head transfer _ cat ) or ( luis 3 china's transport data macao ))*.