Perhaps you should try some spelling variations:
cau treo » cau theo, cau tren, cau triet
thuc day » thuc dan, thuc vat
nam thuc » nam thuoc, am thuc, nam thu
tang xa » trang xa, tang ma, lang xa
hieu va » lieu va, hieu qua
dan vai » dan tai, dan vat, den vai
va nam » van nam, ha nam, va nay
sac ky » sai ky
dan va » doan va, dan ca, ban va

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

• Performing a fuzzy search may retrieve terms with similar spellings: toc ((sac ky) OR (cac ky)) tang xa hoi. hieu va nam thuc day ((dan vai) or (dan va)) cau treo~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc ((sac ky) OR (cac ky)) tang xa hoi. hieu va nam thuc day ((dan vai) OR (dan va)) cau treo.
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc ((sac ky) OR (cac ky)) tang xa hoi. hieu va nam thuc day ((dan vai) or (dan va)) cau treo".
• Adding a wildcard symbol may retrieve word variants: toc ((sac ky) OR (cac ky)) tang xa hoi. hieu va nam thuc day ((dan vai) or (dan va)) cau treo*.