Perhaps you should try some spelling variations:
trinh quan » tinh quang, trinh han
hieu manh » chieu xanh, hieu nganh, dieu hanh
hang cong » dang cong, hang nong, bang cong
hoc hieu » hoc thieu, hoc hien, doc hieu
van toan » van tuan, van tan, van thanh
ban hang » ngan hang
luat » luan, xuat

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 hieu manh - hanh ((trinh luat) OR (trinh quan)) hang cong ((van toan) OR (ban hang)) cau~.
• Adding a wildcard symbol may retrieve word variants: hoc hieu manh - hanh ((trinh luat) or (trinh quan)) hang cong ((van toan) or (ban hang)) cau*.