Perhaps you should try some spelling variations:
hieu xanh » chieu xanh, hieu manh, hieu nganh
dang song » nang song, dang cong, dang son
bang song » nang song
van tuanh » van thanh, van tranh, van quan
doc hieu » toc thieu, hoc thieu, hoc hien
canh ban » can ban, canh dan, canh van
ban quan » van quan
van tuan » van quan, van ban, anh tuan

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: doc hieu xanh - canh ban quan ((dang song) OR (bang song)) ((van tuan) OR (van tuanh)) cau~.
• Adding a wildcard symbol may retrieve word variants: doc hieu xanh - canh ban quan ((dang song) or (bang song)) ((van tuan) or (van tuanh)) cau*.