Perhaps you should try some spelling variations:
hanh tranh » canh tranh, hanh trinh, hanh trang
chieu xanh » chieu sach, chieu sang, chieu tinh
luan nhung » luan hung, quan nhung, luan phuong
luan chung » luan chinh
hieu manh » hieu nganh, dieu hanh, hien hanh
dong kinh » trong kinh
kinh toan » tinh toan, hinh toan, minh toan
toan ban » van ban

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 (chieu xanh)) - hanh tranh ((luan nhung) OR (luan chung)) dong kinh toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hieu manh) OR (chieu xanh)) - hanh tranh ((luan nhung) OR (luan chung)) dong kinh toan ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((hieu manh) or (chieu xanh)) - hanh tranh ((luan nhung) OR (luan chung)) dong kinh toan ban".
• Adding a wildcard symbol may retrieve word variants: hoc ((hieu manh) or (chieu xanh)) - hanh tranh ((luan nhung) OR (luan chung)) dong kinh toan ban*.