Perhaps you should try some spelling variations:
nam thuc » nam thuoc, am thuc, nam thu
sach ty » sach y, sach tu, sach thu
lang xa » lang ha, dang xay, lang van
hieu va » lieu va, hieu qua
sach ky » sac ky, sach y, sach kem
vat dan » va dan, van dan, vat ran
vai cac » va cac, tai cac, vay cac
voi cac » loi cach
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: hoc ((sach ky) or (sach ty)) lang xa hoi. hieu va nam thuc vat dan ((vai cac) or (voi cac)) treo~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((sach ky) OR (sach ty)) lang xa hoi. hieu va nam thuc vat dan ((vai cac) OR (voi cac)) treo.
• Adding a wildcard symbol may retrieve word variants: hoc ((sach ky) or (sach ty)) lang xa hoi. hieu va nam thuc vat dan ((vai cac) or (voi cac)) treo*.