Perhaps you should try some spelling variations:
china's transport » africa's transport, india's transport
city transit » city transport
transit unit » transit united, transit und, transit use
2 china's » _ china's, 3 china's, 1 china's
unit cost » unit costs, net cost, unit root
luis de » luis e
de city » date city, de citer, one city
luis 2 » luis f, luis c, luis a

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: (( luis 2 china's transport _ marc ) OR ( luis de city transit unit cost ))~.
• Adding a wildcard symbol may retrieve word variants: (( luis 2 china's transport _ marc ) or ( luis de city transit unit cost ))*.