Perhaps you should try some spelling variations:
chet nuoc » chet duoc, che duoc, chua nuoc
thu sach » tu sach, thuat sach, thuoc sach
hanh lai » hanh lam, hanh tai, thanh lap
ky sang » ky dang, ky tang, duy sang
hieu ve » hieu va, hieu van
ve chet » ve chat, ve che, se chet
va hanh » van hanh, va thanh, va danh
lai cua » dai cua, hai cua, lai chau
cua tre » cua te, cuu tre, cua triet
ma hoi » mai hoi, xa hoi, ma hoa

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

• Performing a fuzzy search may retrieve terms with similar spellings: thu sach ((ky sang) or (ky nang)) ma hoi. hieu ve chet nuoc va hanh lai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach ((ky sang) OR (ky nang)) ma hoi. hieu ve chet nuoc va hanh lai cua tre.
• Adding a wildcard symbol may retrieve word variants: thu sach ((ky sang) or (ky nang)) ma hoi. hieu ve chet nuoc va hanh lai cua tre*.