Perhaps you should try some spelling variations:
thuc day » thuc dan, thuc vat
nam thuc » nam thuoc, am thuc, nam thu
dang xay » dang van, van xay
vat cuu » vat cua
dan vat » dang vat, van vat, dan va
day dan » day danh, dao dan, cay dan
hieu va » lieu va, hieu qua
cuu tre » cua tre, cau tren, cau treo
lang xa » lang ha, lang van
sac ky » cac ky, sai ky
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 ((sac ky) or (sach y)) ((lang xa) OR (dang xay)) hoi. hieu va nam thuc day dan vat cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc ((sac ky) OR (sach y)) ((lang xa) OR (dang xay)) hoi. hieu va nam thuc day dan vat cuu tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc ((sac ky) or (sach y)) ((lang xa) OR (dang xay)) hoi. hieu va nam thuc day dan vat cuu tre*".