Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien anh
hanh trinh » canh tranh, hanh chinh
hoc thieu » toc thieu, hoc hien
cua nhung » va nhung
qua nhung » quan nhung, qua chung, chua nhung
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 thieu xanh - hanh trinh ((cua nhung) or (qua nhung)) cong ((dan toan) or (dan than)) cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu xanh - hanh trinh ((cua nhung) OR (qua nhung)) cong ((dan toan) OR (dan than)) cao.
• Adding a wildcard symbol may retrieve word variants: hoc thieu xanh - hanh trinh ((cua nhung) or (qua nhung)) cong ((dan toan) or (dan than)) cao*.