Perhaps you should try some spelling variations:
thien van » thi van
hanh vai » hanh vi, hanh tai, hanh van
truc van » truc va, thuc van, truc ban
tang van » dang van, hoang van, trong van
dao truc » dao tuc, dao tru, dai truc
hanh va » hang va, hanh vi
cua tre » cua te, cuu tre, cua triet
tang ma » mang may
sai ky » sac ky
tu sai » tu bai, tu san, tu cai

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 ((tang ma) OR (tang van)) hoi. thien van dao truc van ((hanh vai) OR (hanh va)) cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sai ky ((tang ma) or (tang van)) hoi. thien van dao truc van ((hanh vai) OR (hanh va)) cua tre~".
• Adding a wildcard symbol may retrieve word variants: tu sai ky ((tang ma) or (tang van)) hoi. thien van dao truc van ((hanh vai) OR (hanh va)) cua tre*.