Perhaps you should try some spelling variations:
thieu sach » chieu sach, thien hach, hieu cach
thanh toan » thanh hoa, thanh san, tinh toan
hien hanh » dieu hanh
xuong dan » huong dan, xuong san, tuong dan
tung dan » dung dan, huong dan, trung dai
toan tap » toan ban
toan va » doan va, tran van, 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: hoc ((thieu sach) or (hien hanh)) - thanh toan va nhung ((tung dan) or (xuong dan)) toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thieu sach) OR (hien hanh)) - thanh toan va nhung ((tung dan) OR (xuong dan)) toan tap.
• Adding a wildcard symbol may retrieve word variants: hoc ((thieu sach) or (hien hanh)) - thanh toan va nhung ((tung dan) or (xuong dan)) toan tap*.