Perhaps you should try some spelling variations:
tieu sach » chieu sach, dien sach, te sach
hanh dung » thanh dung, anh dung, manh dung
hanh dong » anh dong, ha dong
bang cong » dang cong, bang song, hang cong
cong manh » cong danh, duong manh, cong thanh
manh toan » thanh toan, anh tuan, tinh toan
cua bang » chua bang, cua ban, cua dang
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 dung) or (hanh dong)) cua bang cong manh toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo tieu sach - ((hanh dung) OR (hanh dong)) cua bang cong manh toan tap.
• Adding a wildcard symbol may retrieve word variants: theo tieu sach - ((hanh dung) or (hanh dong)) cua bang cong manh toan tap*.