Perhaps you should try some spelling variations:
doi chieu » doc hieu, doi chi, ho chieu
canh manh » lanh manh, canh tranh, cach mang
van thanh » ban thanh, van tuan
thanh cao » thanh ca, thanh cac, thanh thao
song van » hoang van, trong van, duong van
cao cho » cap cho, cao chat
ca tang » cao tang, gia tang, ca trong
ha tang » phap tang, cao tang, kho tang

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((cao cho) or (doi chieu)) xanh - canh manh ((ca tang) OR (ha tang)) song van thanh cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((cao cho) OR (doi chieu)) xanh - canh manh ((ca tang) OR (ha tang)) song van thanh cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((cao cho) or (doi chieu)) xanh - canh manh ((ca tang) OR (ha tang)) song van thanh cao".
• Adding a wildcard symbol may retrieve word variants: ((cao cho) or (doi chieu)) xanh - canh manh ((ca tang) OR (ha tang)) song van thanh cao*.