Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien anh
luat chung » luan chung, luat thuong, cua chung
chung cong » nhung cong, chong cong, phung cong
hoc thieu » toc thieu, hoc hien
canh tinh » hanh tinh, canh tranh, nhanh tinh
manh tinh » man tinh, manh binh, hanh tinh
van toan » van tuan, van tan, van thanh

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu xanh - ((canh tinh) OR (manh tinh)) luat chung cong ((van toan) OR (tinh toan)) ban~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thieu xanh - ((canh tinh) OR (manh tinh)) luat chung cong ((van toan) or (tinh toan)) ban~".
• Adding a wildcard symbol may retrieve word variants: hoc thieu xanh - ((canh tinh) OR (manh tinh)) luat chung cong ((van toan) or (tinh toan)) ban*.