Perhaps you should try some spelling variations:
thanh thuong » thanh huong, thanh chuong, thanh phuong
hieu manh » chieu xanh, hieu nganh, dieu hanh
quan hang » quan lang, quan hanh, qua hang
luan hoan » luan van
doc hieu » toc thieu, hoc thieu, hoc hien
cong ban » cong bang, cong san, cong tan
ban hang » ngan hang
hang cau » hang dau, hang ca, nhung cau

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: doc hieu manh - thanh thuong ((quan hang) OR (((quan hoang) OR (luan hoan)))) cong ban hang cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doc hieu manh - thanh thuong ((quan hang) or (((quan hoang) OR (luan hoan)))) cong ban hang cau~".
• Adding a wildcard symbol may retrieve word variants: doc hieu manh - thanh thuong ((quan hang) or (((quan hoang) OR (luan hoan)))) cong ban hang cau*.