Perhaps you should try some spelling variations:
anh thai » anh thi, anh tai, nhanh thai
xuc tuan » duc thuan, quoc tuan, xuan tuan
cuu tre » cau tren, cau treo
hieu ve » hieu va, hieu van
cua tre » cua te, cua triet, dua tren
cac xuc » cam xuc, cac nuoc, chat xuc
tu sac » tu sach, tu cac, tu san
sac ky » cac ky, sai ky
ve cac » va cac, vien cac
o hai » co hai, so hai, o lai
o hoi » co hoi, o hoc, o hoa

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sac ky nang ((o hoi) or (o hai)). hieu ve cac xuc tuan anh thai ((cua tre) or (cuu tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sac ky nang ((o hoi) OR (o hai)). hieu ve cac xuc tuan anh thai ((cua tre) OR (cuu tre)).
• Adding a wildcard symbol may retrieve word variants: tu sac ky nang ((o hoi) or (o hai)). hieu ve cac xuc tuan anh thai ((cua tre) or (cuu tre))*.