Perhaps you should try some spelling variations:
thieu sach » chieu sach, thien hach, hieu cach
thanh tung » thanh cong
hoc thieu » toc thieu, hoc hien
tuan dung » tuan duong, tran dung, tuan dang
trong tac » trong cac, tuong tac, trong tan
tan dung » tran dung, tin dung, van dung
tac toan » tap toan, tam toan, hach toan
toan ban » van 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 - thanh tung ((tuan dung) OR (tan dung)) trong tac toan ban~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thieu sach - thanh tung ((tuan dung) OR (tan dung)) trong tac toan ban".
• Adding a wildcard symbol may retrieve word variants: hoc thieu sach - thanh tung ((tuan dung) OR (tan dung)) trong tac toan ban*.