Perhaps you should try some spelling variations:
hanh dai » hanh tai, hanh dao, vanh dai
thuc day » thuc dan, thuc vat
tu sach » thu sach, su sach, te sach
thuc va » thuc vat, thuc dan
nang co » nang cao, nang doc, nang noi
sach ky » sac ky, sach y, sach ty
va lam » van lam, va lap
co hai » co dai, co hoi, o hai
cua te » cua tu
va am » va cam

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky nang co hai. lieu ((va am) OR (va lam)) ((thuc va) OR (thuc day)) hanh dai cua te~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ky nang co hai. lieu ((va am) OR (va lam)) ((thuc va) or (thuc day)) hanh dai cua te~".
• Adding a wildcard symbol may retrieve word variants: tu sach ky nang co hai. lieu ((va am) OR (va lam)) ((thuc va) or (thuc day)) hanh dai cua te*.