Perhaps you should try some spelling variations:
tranh luat » trinh luat, tranh luan, trinh luan
hieu manh » chieu xanh, hieu nganh, hien hanh
luat canh » luat doanh, luat kinh, luc canh
canh cong » hanh cong, anh cong, canh cung
dan toan » van toan, manh toan, xuan toan
dan than » dan chan, ban than, van than

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((hieu manh) or (dieu hanh)) - canh tranh luat canh cong ((dan toan) OR (dan than)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hieu manh) OR (dieu hanh)) - canh tranh luat canh cong ((dan toan) OR (dan than)) cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((hieu manh) or (dieu hanh)) - canh tranh luat canh cong ((dan toan) OR (dan than)) cau".
• Adding a wildcard symbol may retrieve word variants: hoc ((hieu manh) or (dieu hanh)) - canh tranh luat canh cong ((dan toan) OR (dan than)) cau*.