Perhaps you should try some spelling variations:
nam thuc » nam thuoc, am thuc, nam thu
dang xay » dang van, van xay
toc cac » hoc cac, tuc cac, ton cac
dan tai » van tai, dan thi, han tai
dan vai » dan va, dan vat, den vai
thuc va » thuc vat, thuc dan, thuc day
cuu tre » cua tre, cau tren, cau treo
hieu va » lieu va, hieu qua
lang xa » lang ha, lang van
va nam » van nam, ha nam, va nay

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

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