Perhaps you should try some spelling variations:
planning can » planning chain, planning case, planning land
banking can » banking case, banking bank, banking chad
china yuan » china yunnan, chih yuan, chiao yuan
long thanh » luong thanh, long han, truong thanh
long trinh » long trip
yuan kang » yuan wang, yuan chang, chan kang
kang li » tang li, wang li, yang li

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: wang ((banking can) OR (planning can)) china yuan kang li ((long thanh) OR (long trinh)) ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wang ((banking can) or (planning can)) china yuan kang li ((long thanh) OR (long trinh)) ;~".
• Adding a wildcard symbol may retrieve word variants: wang ((banking can) or (planning can)) china yuan kang li ((long thanh) OR (long trinh)) ;*.