Perhaps you should try some spelling variations:
dang xay » dang van, van xay
hanh vai » hanh vi, hanh va, hanh tai
ban hanh » ban hang
cua tre » cua te, cuu tre, cua triet
va khac » va khao, va kha, vu khac
lang xa » lang ha, lang van
vai cua » dai cua, hai cua, lai cua
tuc ban » thuc ban, truc ban, tu ban
su sai » su tai, su hai, su dai
sai ky » sac ky
va hac » van hac, va cac, va hoc

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: su sai ky ((lang xa) OR (dang xay)) hoi. hieu ((va hac) OR (va khac)) tuc ban hanh vai cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sai ky ((lang xa) or (dang xay)) hoi. hieu ((va hac) OR (va khac)) tuc ban hanh vai cua tre~".
• Adding a wildcard symbol may retrieve word variants: su sai ky ((lang xa) or (dang xay)) hoi. hieu ((va hac) OR (va khac)) tuc ban hanh vai cua tre*.