Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien anh
hanh tranh » canh tranh, hanh trinh, hanh trang
luan chung » luan chinh
hoc thieu » toc thieu, hoc hien
luan ung » luan hung, luon ung, luan luong
dan toan » van toan, dan than, manh 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 thieu xanh - hanh tranh ((luan ung) or (luan chung)) huong dan toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu xanh - hanh tranh ((luan ung) OR (luan chung)) huong dan toan ban.
• Adding a wildcard symbol may retrieve word variants: hoc thieu xanh - hanh tranh ((luan ung) or (luan chung)) huong dan toan ban*.