Perhaps you should try some spelling variations:
hanh lai » hanh lam, hanh tai, thanh lap
lai cua » dai cua, hai cua, lai chau
sach ky » sac ky, sach ty, sach kem
su cham » su pham, tu cham, vu cham
hieu su » hieu sau, tieu su, hieu so
nang ma » tang ma, sang ma, nang cao
cua tre » cua te, cuu tre, cua triet
ma hoi » mai hoi, xa hoi, ma hoa
xuc va » duc va, tuc va, luc va

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: thu ((sach ky) OR (sach y)) nang ma hoi. hieu su cham ((xuc va) OR (thuc vat)) hanh lai cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu ((sach ky) OR (sach y)) nang ma hoi. hieu su cham ((xuc va) or (thuc vat)) hanh lai cua tre~".
• Adding a wildcard symbol may retrieve word variants: thu ((sach ky) OR (sach y)) nang ma hoi. hieu su cham ((xuc va) or (thuc vat)) hanh lai cua tre*.