Perhaps you should try some spelling variations:
thuc dan » thuc hanh, hoc dan, thuc vat
hanh hai » thanh hai, nhanh hai, hang hai
thuc day » thuc vat
hai cua » thai cua, dai cua, hoi cua
su sach » so sach, vu sach
hieu va » lieu va, hieu qua
co sach » bo sach, cuon sach, hoc sach
cua tre » cua te, cuu tre, cua triet
va cam » va cham, va cac, va cao
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) or (co sach)) ky nang x hoi. hieu va cam ((thuc dan) or (thuc day)) hanh hai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (co sach)) ky nang x hoi. hieu va cam ((thuc dan) OR (thuc day)) hanh hai cua tre.
• Adding a wildcard symbol may retrieve word variants: ((su sach) or (co sach)) ky nang x hoi. hieu va cam ((thuc dan) or (thuc day)) hanh hai cua tre*.