Perhaps you should try some spelling variations:
thanh truong » thanh trung, thanh thuong, thanh tung
chieu cach » chieu sach, hieu cac, chiet tach
truong cua » truong ca, truong quan, truong cao
hieu cach » hieu cac, chieu sach, hieu ca
cua nhung » va nhung
cong dan » cong san, cong tan, cong dong
toan cau » toan cao, toan ban, toan tap

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

• Performing a fuzzy search may retrieve terms with similar spellings: doc ((hieu cach) or (chieu cach)) - thanh truong cua nhung ((cong dan) OR (huong dan)) toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc ((hieu cach) OR (chieu cach)) - thanh truong cua nhung ((cong dan) OR (huong dan)) toan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doc ((hieu cach) or (chieu cach)) - thanh truong cua nhung ((cong dan) OR (huong dan)) toan cau".
• Adding a wildcard symbol may retrieve word variants: doc ((hieu cach) or (chieu cach)) - thanh truong cua nhung ((cong dan) OR (huong dan)) toan cau*.