Perhaps you should try some spelling variations:
khanh thai » nhanh thai, khanh thanh, khanh thuan
van khanh » van thanh, van hanh, van anh
vien cac » vien bach, vien dai, vien da
thai cuu » thai cua, tai cuc, thi cuc
xuc van » duc van, luc van, vuc van
tu sach » thu sach, su sach, te sach
sach ky » sac ky, sach y, sach ty
cso hai » co hai, cho hai, cao khai
cuu tre » cua tre, cau tren, cau treo
so hai » son hai, su hai, so ha

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 ((so hai) or (cso hai)). hieu ((vien cac) or (va cac)) xuc van khanh thai cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky nang ((so hai) OR (cso hai)). hieu ((vien cac) OR (va cac)) xuc van khanh thai cuu tre.
• Adding a wildcard symbol may retrieve word variants: tu sach ky nang ((so hai) or (cso hai)). hieu ((vien cac) or (va cac)) xuc van khanh thai cuu tre*.