Perhaps you should try some spelling variations:
thien hach » thien thanh, hien hanh
hanh tranh » hanh trinh, hanh trang, lanh tranh
hoc thien » hoc hien, hoc thieu, hoc thiet
hang cong » dang cong, hang nong, bang cong
cua hang » cua dang, cua nhung, cua cong
tan doan » tran doan, tap doan, toan doanh
van doan » van doanh, van toan, van hoan

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 thien hach - ((hanh tranh) OR (canh tranh)) cua hang cong ((tan doan) OR (van doan)) cap~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thien hach - ((hanh tranh) or (canh tranh)) cua hang cong ((tan doan) OR (van doan)) cap~".
• Adding a wildcard symbol may retrieve word variants: hoc thien hach - ((hanh tranh) or (canh tranh)) cua hang cong ((tan doan) OR (van doan)) cap*.