Perhaps you should try some spelling variations:
hieu vien » hieu hien, hieu viec, thieu nien
vien dai » hien dai
minh vai » minh va, minh hai, minh ai
te sach » toc sach
mai hoi » mai khoi, dai hoi, mai doi
lai hoi » dai hoi, lai hoa, lai roi
xuc van » duc van, luc van, vuc van
vai cuu » vai cua
cuu tre » cua tre, cau tren, cau treo
y nang » ky nang, ly nang, v nang

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: te sach y nang ((mai hoi) OR (lai hoi)). hieu vien dai ((xuc van) OR (duc tan)) minh vai cuu tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach y nang ((mai hoi) OR (lai hoi)). hieu vien dai ((xuc van) or (duc tan)) minh vai cuu tre~".
• Adding a wildcard symbol may retrieve word variants: te sach y nang ((mai hoi) OR (lai hoi)). hieu vien dai ((xuc van) or (duc tan)) minh vai cuu tre*.