Perhaps you should try some spelling variations:
khanh thai » nhanh thai, khanh thanh, khanh thuan
van khanh » van thanh, van hanh, van anh
thai cuu » thai cua, tai cuc, thi cuc
sach ky » sach y, sach ty, sach kem
xuc van » duc van, luc van, vuc van
cac xuc » cam xuc, cac nuoc, chat xuc
hieu ve » hieu va, hieu van
cuu tre » cua tre, cau tren, cau treo
co hoi » co hoc, co loi
ve cac » va cac, vien cac
sac ky » cac ky, sai ky
o hai » co hai, so hai, o lai

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