Perhaps you should try some spelling variations:
thai cuu » thai cua, tai cuc, thi cuc
anh thai » anh thi, anh tai, nhanh thai
su sach » so sach, vu sach
luc van » luoc van, luu van, duc van
xuc van » duc van, vuc van, xuc ban
cuu tre » cua tre, cau tren, cau treo
hieu ve » hieu va, hieu van
y nang » ky nang, ly nang, v nang
ve cac » va cac, vien cac
o hai » co hai, so hai, o lai
o ha » y ha, _ ha

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

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