Perhaps you should try some spelling variations:
hanh vai » hanh vi, hanh va, hanh tai
hieu van » thien van, lieu va, hieu ve
su sach » so sach, vu sach
hieu va » lieu va, hieu qua
vai cua » dai cua, hai cua, lai cua
va hanh » van hanh, va thanh, va danh
cam luc » cam xuc, cau luc
cua tre » cua te, cuu tre, cua triet
sach ky » sac ky, sach y, sach ty
lang ha » long ha
luc va » duc va, tuc va, loc 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: su sach ky ((lang ha) OR (van xay)) hoi. ((hieu van) OR (hieu va)) cam luc va hanh vai cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ky ((lang ha) or (van xay)) hoi. ((hieu van) OR (hieu va)) cam luc va hanh vai cua tre~".
• Adding a wildcard symbol may retrieve word variants: su sach ky ((lang ha) or (van xay)) hoi. ((hieu van) OR (hieu va)) cam luc va hanh vai cua tre*.