Perhaps you should try some spelling variations:
thanh vai » thanh hai, thanh van, thanh tai
sach kem » hanh kem
va thanh » gia thanh, ban thanh, va tinh
nam thuc » nam thuoc, am thuc, nam thu
hieu van » hieu va, thien van, lieu va
vai cua » dai cua, hai cua, lai cua
thuc va » thuc vat, thuc dan, thuc day
cua tre » cua te, cuu tre, cua triet
sach ky » sach y, sach ty, sach hay
sac ky » cac ky, sai ky
x hoi » xa hoi, o hoi, x ho

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

• Performing a fuzzy search may retrieve terms with similar spellings: su ((((sach ky) or (sach kem))) or (sac ky)) nang x hoi. hieu van nam thuc va thanh vai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su ((((sach ky) OR (sach kem))) OR (sac ky)) nang x hoi. hieu van nam thuc va thanh vai cua tre.
• Adding a wildcard symbol may retrieve word variants: su ((((sach ky) or (sach kem))) or (sac ky)) nang x hoi. hieu van nam thuc va thanh vai cua tre*.