Perhaps you should try some spelling variations:
sach moi » sach hoi, bach mai, sach bai
sach doi » sach hoi, sach dao, sach bai
lieu van » hieu van, sieu van, lieu nano
nam thuc » nam thuoc, am thuc, nam thu
hanh dai » hanh tai, hanh dao, vanh dai
nang ma » tang ma, sang ma, nang cao
thuc va » thuc vat, thuc dan, thuc day
va hanh » van hanh, va thanh, va danh
ma hoi » mai hoi, xa hoi, ma hoa

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu ((sach moi) or (sach doi)) nang ma hoi. ((lieu van) or (lieu va)) nam thuc va hanh dai cua vat~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach moi) OR (sach doi)) nang ma hoi. ((lieu van) OR (lieu va)) nam thuc va hanh dai cua vat.
• Adding a wildcard symbol may retrieve word variants: tu ((sach moi) or (sach doi)) nang ma hoi. ((lieu van) or (lieu va)) nam thuc va hanh dai cua vat*.