Perhaps you should try some spelling variations:
hieu vien » hieu hien, hieu viec, thieu nien
vien cac » vien bach, vien dai, vien da
anh thai » anh thi, anh tai, nhanh thai
thai cuu » thai cua, tai cuc, thi cuc
tu sach » thu sach, su sach, te sach
sach ky » sac ky, sach y, sach ty
cac xuc » cam xuc, cac nuoc, chat xuc
xuc van » duc van, luc van, vuc van
van anh » van thanh, tuan anh, van minh
cuu tre » cua tre, cau tren, cau treo
co hai » co dai, so hai, cong hai
co hoi » co hoc, co loi
o hai » so hai, o lai, _ hai

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach ky nang ((o hai) or (((co hai) OR (co hoi)))). hieu vien cac xuc van anh thai cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky nang ((o hai) OR (((co hai) OR (co hoi)))). hieu vien cac xuc van anh thai cuu tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ky nang ((o hai) or (((co hai) OR (co hoi)))). hieu vien cac xuc van anh thai cuu tre".
• Adding a wildcard symbol may retrieve word variants: tu sach ky nang ((o hai) or (((co hai) OR (co hoi)))). hieu vien cac xuc van anh thai cuu tre*.