Perhaps you should try some spelling variations:
doanh doanh » toan doanh, doanh hoan, doanh thanh
thieu hach » thien hach, chieu sach, hieu cach
hien hanh » dieu hanh
doanh cua » doanh luan
cua nhung » va nhung
cong danh » cuong danh, cong dan, cong thanh
cong anh » dong anh, hong anh, cong thanh
tuan tap » toan tap, tuan tai, tuyen tap

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 hach) or (hien hanh)) - doanh doanh cua nhung ((cong anh) OR (cong danh)) tuan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thieu hach) OR (hien hanh)) - doanh doanh cua nhung ((cong anh) OR (cong danh)) tuan tap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((thieu hach) or (hien hanh)) - doanh doanh cua nhung ((cong anh) OR (cong danh)) tuan tap".
• Adding a wildcard symbol may retrieve word variants: hoc ((thieu hach) or (hien hanh)) - doanh doanh cua nhung ((cong anh) OR (cong danh)) tuan tap*.