Perhaps you should try some spelling variations:
vat thanh » dat thanh, gat thanh, tat thanh
nam thuc » nam thuoc, am thuc, nam thu
thanh vi » hanh vi, thanh va, thanh ve
sach ky » sach y, sach ty, sach kem
hieu va » lieu va, hieu qua
cua tre » cua te, cuu tre, cua triet
sac ky » cac ky, sai ky
va nam » van nam, ha nam, va nay
vi cua » vai cua, di cua
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 (hanh kem))) or (sac ky)) nang x hoi. hieu va nam thuc vat thanh vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su ((((sach ky) OR (hanh kem))) OR (sac ky)) nang x hoi. hieu va nam thuc vat thanh vi cua tre.
• Adding a wildcard symbol may retrieve word variants: su ((((sach ky) or (hanh kem))) or (sac ky)) nang x hoi. hieu va nam thuc vat thanh vi cua tre*.