Perhaps you should try some spelling variations:
theo chieu » theo tieu, ho chieu, theo chu
chieu tinh » trieu tinh, lieu tinh, chau tinh
hanh tranh » canh tranh, hanh trinh, hanh trang
van thanh » ban thanh, van tuan
cua bang » chua bang, cua ban, cua hang
cua dang » cua cong, cua ban
van toan » van tuan, van tan, manh toan

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo chieu tinh - hanh tranh ((cua bang) OR (cua dang)) phuong ((van toan) or (van thanh)) cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chieu tinh - hanh tranh ((cua bang) OR (cua dang)) phuong ((van toan) OR (van thanh)) cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo chieu tinh - hanh tranh ((cua bang) OR (cua dang)) phuong ((van toan) or (van thanh)) cao".
• Adding a wildcard symbol may retrieve word variants: theo chieu tinh - hanh tranh ((cua bang) OR (cua dang)) phuong ((van toan) or (van thanh)) cao*.