Perhaps you should try some spelling variations:
thieu sach » chieu sach, thien hach, hieu cach
nhung cong » dung cong, thong cong, hang cong
hoc thieu » toc thieu, hoc hien
thanh han » thanh phan, thanh nhan, thanh hang
cua nhung » va nhung
hanh han » hanh nhan, hanh phan, hanh san
san toan » van toan, dan toan, manh toan

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 - ((hanh han) or (thanh han)) cua nhung cong ((san toan) or (tinh toan)) cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu sach - ((hanh han) OR (thanh han)) cua nhung cong ((san toan) OR (tinh toan)) cao.
• Adding a wildcard symbol may retrieve word variants: hoc thieu sach - ((hanh han) or (thanh han)) cua nhung cong ((san toan) or (tinh toan)) cao*.