Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien anh
hanh trang » thanh trung, canh tranh, minh trang
hanh trinh » canh tranh, hanh chinh
hoc thieu » toc thieu, hoc hien
dung cong » dung trong
dan toan » dan than, manh toan, xuan toan
van toan » van tuan, van tan, van thanh
va dung » van dung, va duong, vat dung

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 trang) or (hanh trinh)) va dung cong ((dan toan) or (van toan)) cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu xanh - ((hanh trang) OR (hanh trinh)) va dung cong ((dan toan) OR (van toan)) cao.
• Adding a wildcard symbol may retrieve word variants: hoc thieu xanh - ((hanh trang) or (hanh trinh)) va dung cong ((dan toan) or (van toan)) cao*.