Perhaps you should try some spelling variations:
ngang thanh » nang thanh, nganh thanh, ngan thanh
hang doanh » hanh doanh, nhung doanh, van doanh
hoc trieu » hoc thieu, hoc tieu, hoc dieu
doanh cua » doanh luan
bang cong » dang cong, bang song, hang cong
thanh mau » hanh mau, thanh san, thanh hai
ban cong » van cong, phan cong, ban huong

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 trieu tinh - hang doanh cua ((ban cong) OR (bang cong)) ngang thanh mau~.
• Adding a wildcard symbol may retrieve word variants: hoc trieu tinh - hang doanh cua ((ban cong) or (bang cong)) ngang thanh mau*.