Perhaps you should try some spelling variations:
tranh van » tran van, trinh van, thanh van
lang song » nang song, lang son, lang dong
bang song » nang song
chi xanh » chi anh, chi danh, chi hanh
dan than » dan chan, ban than, van than
than cap » khan cap, thanh lap, thanh cac
doi chi » doi khi

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi chi xanh - canh tranh van ((lang song) or (bang song)) dan than cap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chi xanh - canh tranh van ((lang song) OR (bang song)) dan than cap*.