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

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 - hanh doanh cua ((((ban cong) OR (phan cong))) OR (bang cong)) ngang thanh mau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc trieu tinh - hanh doanh cua ((((ban cong) OR (phan cong))) or (bang cong)) ngang thanh mau~".
• Adding a wildcard symbol may retrieve word variants: hoc trieu tinh - hanh doanh cua ((((ban cong) OR (phan cong))) or (bang cong)) ngang thanh mau*.