Perhaps you should try some spelling variations:
nam thuc » nam thuoc, am thuc, nam thu
hanh vai » hanh vi, hanh va, hanh tai
vu sach » vu bach, vu khach
su sach » so sach
hieu ve » hieu va, hieu van
thuc va » thuc vat, thuc dan, thuc day
va hanh » van hanh, va thanh, va danh
vai cua » dai cua, hai cua, lai cua
cua tre » cua te, cuu tre, cua triet
y nang » ky nang, ly nang, v nang

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

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