Perhaps you should try some spelling variations:
theo chieu » ho chieu, theo chu, thi chieu
hanh hang » thanh hang, hang hang, hanh han
dung cong » dung trong
cong tac » cong ty
tac tran » tan tran, tac trai, tac tren
tran cao » toan cao, tran chau, trang cho
va dung » van dung, va duong, vat dung

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) or (theo tieu)) sach - hanh hang va dung cong tac tran cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((theo chieu) OR (theo tieu)) sach - hanh hang va dung cong tac tran cao.
• Adding a wildcard symbol may retrieve word variants: ((theo chieu) or (theo tieu)) sach - hanh hang va dung cong tac tran cao*.