Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
hieu xanh » chieu xanh, hieu manh, hieu nganh
hanh tinh » nhanh tinh, thanh tinh, canh tinh
cong lang » cong vang, cong luong, cong quang
lang than » lang thang, lang thanh, sang than
doc hieu » toc thieu, hoc thieu, hoc hien
cua dong » chua dong, cua dang, cua nong
than cau » toan cau, phan cau, than cap

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 - ((hanh tinh) OR (hanh trinh)) ((cua dong) or (cua cong)) cong lang than cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc hieu xanh - ((hanh tinh) OR (hanh trinh)) ((cua dong) OR (cua cong)) cong lang than cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doc hieu xanh - ((hanh tinh) OR (hanh trinh)) ((cua dong) or (cua cong)) cong lang than cau".
• Adding a wildcard symbol may retrieve word variants: doc hieu xanh - ((hanh tinh) OR (hanh trinh)) ((cua dong) or (cua cong)) cong lang than cau*.