Perhaps you should try some spelling variations:
kho tang » cao tang
hanh tai » thanh tai, hang tai, hinh tai
cua tre » cua te, cuu tre, cua triet
ky tang » ky nang, ky dang, ky trong
han tai » hang tai, nhan tai, van tai
van hoi » van hoa, van hoc, van hoe
hieu va » lieu va, hieu qua
cau luc » cau truc, cau phuc
te sac » te sach, te cac, te san
luc va » duc va, tuc va, loc va
va cau » van cau, va cac, va dau

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sac ((ky tang) OR (kho tang)) van hoi. hieu va cau luc va ((hanh tai) or (han tai)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sac ((ky tang) OR (kho tang)) van hoi. hieu va cau luc va ((hanh tai) OR (han tai)) cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sac ((ky tang) OR (kho tang)) van hoi. hieu va cau luc va ((hanh tai) or (han tai)) cua tre".
• Adding a wildcard symbol may retrieve word variants: te sac ((ky tang) OR (kho tang)) van hoi. hieu va cau luc va ((hanh tai) or (han tai)) cua tre*.