Perhaps you should try some spelling variations:
theo chieu » theo tieu, ho chieu, theo chu
chieu xanh » chieu sach, chieu sang, chieu tinh
hanh dang » hanh dong, anh dang, hanh dung
dung cong » dung trong
dang vat » dang van, dong vat, dang nhat
vat dung » van dung, va dung, viet dung
tan toan » tan tran, tap toan, dan toan
van toan » van tuan, van tan, van thanh

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 xanh - hanh dang vat dung cong ((tan toan) or (van toan)) cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chieu xanh - hanh dang vat dung cong ((tan toan) OR (van toan)) cao.
• Adding a wildcard symbol may retrieve word variants: theo chieu xanh - hanh dang vat dung cong ((tan toan) or (van toan)) cao*.