Perhaps you should try some spelling variations:
thanh vai » thanh hai, thanh van, thanh tai
van nang » van quang, van ban, van dong
va thanh » gia thanh, ban thanh, va tinh
nam thuc » nam thuoc, am thuc, nam thu
bach van » bach dan, cach van, bach dang
so bach » so sach, song bach, noi bach
thuc va » thuc vat, thuc dan, thuc day
lai roi » loi roi
hieu he » hieu ve, hiem he, hieu le
lai hoi » dai hoi, lai hoa, tai hoi
mai hoi » mai khoi, dai hoi, mai doi
vai hoa » van hoa, va hoa, dai hoa
he nam » ha nam, nghe nam

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

• Performing a fuzzy search may retrieve terms with similar spellings: so bach van nang ((((mai hoi) OR (lai hoi))) or (lai roi)). hieu he nam thuc va thanh vai hoa viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so bach van nang ((((mai hoi) OR (lai hoi))) OR (lai roi)). hieu he nam thuc va thanh vai hoa viet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "so bach van nang ((((mai hoi) OR (lai hoi))) or (lai roi)). hieu he nam thuc va thanh vai hoa viet".
• Adding a wildcard symbol may retrieve word variants: so bach van nang ((((mai hoi) OR (lai hoi))) or (lai roi)). hieu he nam thuc va thanh vai hoa viet*.