Perhaps you should try some spelling variations:
doanh doanh » toan doanh, doanh hoan, doanh thanh
thieu tinh » trieu tinh, chieu tinh, thien tinh
doanh luan » doanh nhan
duong manh » duong van
hoc thieu » toc thieu, hoc hien
luan tang » luan nang, lan tang, xuan trang
cong manh » cong danh, cong thanh, hoang manh
toan tai » toan tap, doanh tai, toan ban
toan cao » toan ban, toan 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 tinh - doanh doanh luan tang ((cong manh) OR (duong manh)) ((toan tai) or (toan cao))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu tinh - doanh doanh luan tang ((cong manh) OR (duong manh)) ((toan tai) OR (toan cao)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thieu tinh - doanh doanh luan tang ((cong manh) OR (duong manh)) ((toan tai) or (toan cao))".
• Adding a wildcard symbol may retrieve word variants: hoc thieu tinh - doanh doanh luan tang ((cong manh) OR (duong manh)) ((toan tai) or (toan cao))*.