Perhaps you should try some spelling variations:
hanh tranh » canh tranh, hanh trinh, hanh trang
hieu xanh » chieu xanh, hieu manh, hieu nganh
tranh cua » doanh cua, manh cua
bang cong » dang cong, bang song, hang cong
hang nong » thang long, han tong
danh toan » manh toan, anh toan, dang toan
doc hieu » toc thieu, hoc thieu, hoc hien
dan toan » van toan, dan than, manh toan

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

• Performing a fuzzy search may retrieve terms with similar spellings: doc hieu xanh - hanh tranh cua ((bang cong) or (hang nong)) ((danh toan) OR (dan toan)) cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc hieu xanh - hanh tranh cua ((bang cong) OR (hang nong)) ((danh toan) OR (dan toan)) cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doc hieu xanh - hanh tranh cua ((bang cong) or (hang nong)) ((danh toan) OR (dan toan)) cao".
• Adding a wildcard symbol may retrieve word variants: doc hieu xanh - hanh tranh cua ((bang cong) or (hang nong)) ((danh toan) OR (dan toan)) cao*.