Perhaps you should try some spelling variations:
dang xay » dang van, van xay
nam thuc » nam thuoc, am thuc, nam thu
toc sac » toc sach, hoc sach, doc sach
vai cuu » vai cua
dau vai » dau va, dau hai, dau tai
thuc va » thuc vat, thuc dan, thuc day
hieu va » lieu va, hieu qua
lang xa » lang ha, lang van
cuu tre » cua tre, cau tren, cau treo
va nam » van nam, ha nam, va nay
va dau » va dao

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) or (toc san)) ky ((lang xa) or (dang xay)) hoi. hieu va nam thuc va dau vai cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((toc sac) OR (toc san)) ky ((lang xa) OR (dang xay)) hoi. hieu va nam thuc va dau vai cuu tre.
• Adding a wildcard symbol may retrieve word variants: ((toc sac) or (toc san)) ky ((lang xa) or (dang xay)) hoi. hieu va nam thuc va dau vai cuu tre*.