Perhaps you should try some spelling variations:
cong thanh » dong thanh, cong trinh, cong tan
hanh trung » thanh trung, hanh trang, manh trung
tieu sach » chieu sach, dien sach, te sach
trung cua » truong cua, trung tuan, trung cap
cua nong » cua cong, cuu nong, cua dong
cong tac » cong ty
toan tap » toan ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo tieu sach - hanh trung cua nong ((cong thanh) or (cong tac)) toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo tieu sach - hanh trung cua nong ((cong thanh) OR (cong tac)) toan tap.
• Adding a wildcard symbol may retrieve word variants: theo tieu sach - hanh trung cua nong ((cong thanh) or (cong tac)) toan tap*.