Perhaps you should try some spelling variations:
tieu sach » chieu sach, dien sach, te sach
hanh mang » nhanh mang, hanh trang, nhanh lang
dang cong » dung cong
manh toan » thanh toan, anh tuan, tinh toan
mang cua » manh cua, dung cua, ban cua
cua dang » cua cong, cua ban
dan toan » van toan, dan than, xuan 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 tieu sach - hanh mang cua dang cong ((dan toan) or (manh toan)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo tieu sach - hanh mang cua dang cong ((dan toan) OR (manh toan)) cau.
• Adding a wildcard symbol may retrieve word variants: theo tieu sach - hanh mang cua dang cong ((dan toan) or (manh toan)) cau*.