Perhaps you should try some spelling variations:
hanh trang » thanh trung, canh tranh, hanh trinh
chieu xanh » chieu sach, chieu sang, chieu tinh
hieu xanh » hieu manh, hieu nganh, dieu hanh
trang vat » trang va, trang vai, tang vat
dung cong » dung trong
vat dung » van dung, va dung, viet dung
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) OR (chieu xanh)) - hanh trang vat dung cong ((dan toan) or (thanh pho)) ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc ((hieu xanh) OR (chieu xanh)) - hanh trang vat dung cong ((dan toan) OR (thanh pho)) ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doc ((hieu xanh) OR (chieu xanh)) - hanh trang vat dung cong ((dan toan) or (thanh pho)) ban".
• Adding a wildcard symbol may retrieve word variants: doc ((hieu xanh) OR (chieu xanh)) - hanh trang vat dung cong ((dan toan) or (thanh pho)) ban*.