Perhaps you should try some spelling variations:
thanh vai » thanh hai, thanh van, thanh tai
van thanh » ban thanh, van tuan
cau treo » cau theo, cau tren, cau triet
sang mai » sang ma, sang tai, lang mai
lang dai » lang hai, lang mai, lang chai
vai cau » va cau, van cau, vai cac
duc van » duc va, duc tan, duc manh
ve bao » te bao, va bao
ve cao » va cao, ve cac, ve co

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu cac ky ((sang mai) or (lang dai)) hoi. hieu ((ve cao) OR (ve bao)) duc van thanh vai cau treo~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu cac ky ((sang mai) OR (lang dai)) hoi. hieu ((ve cao) OR (ve bao)) duc van thanh vai cau treo.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu cac ky ((sang mai) or (lang dai)) hoi. hieu ((ve cao) OR (ve bao)) duc van thanh vai cau treo".
• Adding a wildcard symbol may retrieve word variants: tu cac ky ((sang mai) or (lang dai)) hoi. hieu ((ve cao) OR (ve bao)) duc van thanh vai cau treo*.