Perhaps you should try some spelling variations:
hieu xanh » chieu xanh, hieu manh, hieu nganh
canh manh » lanh manh, cach mang, van manh
cua nhung » va nhung
hoang anh » hoang minh, hoang van
quang cao » nang cao, quang nam
doc hieu » toc thieu, hoc thieu, hoc hien
dong anh » hong anh, dong thanh, dong kinh

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 - ((canh manh) or (canh tranh)) cua nhung ((dong anh) OR (hoang anh)) quang cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc hieu xanh - ((canh manh) OR (canh tranh)) cua nhung ((dong anh) OR (hoang anh)) quang cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doc hieu xanh - ((canh manh) or (canh tranh)) cua nhung ((dong anh) OR (hoang anh)) quang cao".
• Adding a wildcard symbol may retrieve word variants: doc hieu xanh - ((canh manh) or (canh tranh)) cua nhung ((dong anh) OR (hoang anh)) quang cao*.