Perhaps you should try some spelling variations:
hanh tai » thanh tai, hang tai, han tai
hanh vai » hanh vi, hanh va, hanh van
hieu van » hieu va, thien van, lieu va
cuu tre » cua tre, cau tren, cau treo
hac tuc » thac toc, thai tuc
van hac » van hoc, van ha, van hai
tay hoi » tay ho, tao hoi, tay thai
xay hoi » xa hoi, cay phoi, gay thoi
sai ky » sac ky
tuc va » thuc va, truc va, tuc xa
tu sai » tu bai, tu san, tu cai
ky va » ly va, ke va, my va

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

• If you are trying to use Boolean operators, they must be ALL CAPS: tu sai ky va ((xay hoi) OR (tay hoi)). hieu van hac tuc va ((hanh vai) OR (hanh tai)) cuu tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sai ky va ((xay hoi) or (tay hoi)). hieu van hac tuc va ((hanh vai) OR (hanh tai)) cuu tre~".
• Adding a wildcard symbol may retrieve word variants: tu sai ky va ((xay hoi) or (tay hoi)). hieu van hac tuc va ((hanh vai) OR (hanh tai)) cuu tre*.