Perhaps you should try some spelling variations:
hanh lai » hanh lam, hanh tai, thanh lap
cua tre » cua te, cuu tre, cua triet
tuc ban » thuc ban, truc ban, tuc dan
lai cua » dai cua, hai cua, lai chau
lang xa » lang ha, dang xay, lang van
hieu va » hieu qua
ky lang » ky nang, ky dang, ky tang
sac ky » cac ky, sai ky
tu ban » thu ban, te ban
su sac » su sach, su cac, su xac

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