Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien anh
hanh trinh » canh tranh, hanh chinh
trinh quan » tinh quang, trinh luat, trinh han
hoc thieu » toc thieu, hoc hien
hang nong » thang long, han tong
dang cong » dung cong
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: hoc thieu xanh - hanh trinh quan ((hang nong) or (dang cong)) ((dan toan) or (tinh toan)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu xanh - hanh trinh quan ((hang nong) OR (dang cong)) ((dan toan) OR (tinh toan)) cau.
• Adding a wildcard symbol may retrieve word variants: hoc thieu xanh - hanh trinh quan ((hang nong) or (dang cong)) ((dan toan) or (tinh toan)) cau*.