Perhaps you should try some spelling variations:
nam thuoc » nam thu, nha thuoc, cay thuoc
nam thuc » am thuc, nam thu, nam tu
cau treo » cau theo, cau tren, cau triet
lang xa » lang ha, dang xay, lang van
ky lang » ky nang, ky dang, ky tang
dan tai » van tai, dan thi, han tai
cuu tre » cua tre, cau tren
toc sac » toc sach, toc san, hoc sach
sac ky » cac ky, sai ky
ca dan » cac dan, ca 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 ky lang xa hoi. hieu qua ((nam thuc) or (nam thuoc)) ca dan tai ((cuu tre) or (cau treo))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc sac ky lang xa hoi. hieu qua ((nam thuc) OR (nam thuoc)) ca dan tai ((cuu tre) OR (cau treo)).
• Adding a wildcard symbol may retrieve word variants: toc sac ky lang xa hoi. hieu qua ((nam thuc) or (nam thuoc)) ca dan tai ((cuu tre) or (cau treo))*.