Perhaps you should try some spelling variations:
thuc day » thuc dan, thuc vat
dang xay » dang van, van xay
vai cuu » vai cua
dan vai » dan va, dan tai, dan vat
thuc va » thuc vat, thuc dan
cuu tre » cua tre, cau tren, cau treo
sach ky » sac ky, sach y, sach kem
hieu va » lieu va, hieu qua
xay hoi » xa hoi, tay hoi, cay phoi
sach ty » sach y, sach tu, sach thu
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 ((sach ky) OR (sach ty)) dang xay hoi. hieu va nam ((thuc va) or (thuc day)) dan vai cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc ((sach ky) OR (sach ty)) dang xay hoi. hieu va nam ((thuc va) OR (thuc day)) dan vai cuu tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc ((sach ky) OR (sach ty)) dang xay hoi. hieu va nam ((thuc va) or (thuc day)) dan vai cuu tre".
• Adding a wildcard symbol may retrieve word variants: toc ((sach ky) OR (sach ty)) dang xay hoi. hieu va nam ((thuc va) or (thuc day)) dan vai cuu tre*.