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
hanh nhan » thanh nhan, danh nhan, anh nhan
ban thanh » ban hanh, ban hang
dan toan » van toan, dan than, manh toan
nhan va » nhan tai, nhan dan, nhan tao

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