Perhaps you should try some spelling variations:
thanh chuong » thanh huong, thanh cong, nhanh chong
tieu sach » chieu sach, dien sach, te sach
van hoang » van hoan, quan hoang, tran hoang
van hang » van khang, van thang, ban hang
cong tac » cong ty
tac toan » tap toan, tam toan, hach toan
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 - thanh chuong ((van hang) or (van hoang)) cong tac toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo tieu sach - thanh chuong ((van hang) OR (van hoang)) cong tac toan tap.
• Adding a wildcard symbol may retrieve word variants: theo tieu sach - thanh chuong ((van hang) or (van hoang)) cong tac toan tap*.