Perhaps you should try some spelling variations:
thuat sach » thuat lanh, thuat san
thuc dan » thuc hanh, hoc dan, thuc vat
hieu ve » hieu va, hieu van
dan anh » dan canh, dan hanh, van anh
cua tre » cua te, cuu tre, cua triet
y nang » ky nang, ly nang, v nang
anh vi » hanh vi, anh va, anh ve
vi cua » vai cua, di cua
ve va » ve van, te va, ke va

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

• Performing a fuzzy search may retrieve terms with similar spellings: thuat sach y nang ((xa hoi) or (ma hoa)). hieu ve va thuc dan anh vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuat sach y nang ((xa hoi) OR (ma hoa)). hieu ve va thuc dan anh vi cua tre.
• Adding a wildcard symbol may retrieve word variants: thuat sach y nang ((xa hoi) or (ma hoa)). hieu ve va thuc dan anh vi cua tre*.