Perhaps you should try some spelling variations:
theo chieu » theo tieu, ho chieu, theo chu
chieu sach » chinh sach, chiet tach, chieu sang
thanh tinh » thanh binh, nhanh tinh, than kinh
hanh tinh » hanh trinh, nhanh tinh, canh tinh
dong cong » duong cong, dung cong, dang cong
cua dong » chua dong, cua cong, cua dang
cong tan » cong tac, cong san, cong thanh
tan toan » tan tran, tap toan, van toan
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: theo chieu sach - ((hanh tinh) or (thanh tinh)) cua dong cong tan toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chieu sach - ((hanh tinh) OR (thanh tinh)) cua dong cong tan toan cao.
• Adding a wildcard symbol may retrieve word variants: theo chieu sach - ((hanh tinh) or (thanh tinh)) cua dong cong tan toan cao*.