Perhaps you should try some spelling variations:
thuat sach » thuat lanh, thuat san
van anh » van thanh, tuan anh, van minh
duc van » duc va, duc tan, duc manh
hieu va » lieu va, hieu qua
cua tre » cua te, cuu tre, cua triet
hieu ve » hieu van
y nang » ky nang, ly nang, v nang
ma hoi » mai hoi, ma hoa, me hoi
anh ve » hanh ve, anh va, anh viet
ve cua » le cua, de cua, te cua

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

• If you are trying to use Boolean operators, they must be ALL CAPS: thuat sach y nang ((ma hoi) OR (xa hoi)). ((hieu ve) OR (hieu va)) giao duc van anh ve cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuat sach y nang ((ma hoi) or (xa hoi)). ((hieu ve) OR (hieu va)) giao duc van anh ve cua tre~".
• Adding a wildcard symbol may retrieve word variants: thuat sach y nang ((ma hoi) or (xa hoi)). ((hieu ve) OR (hieu va)) giao duc van anh ve cua tre*.