Perhaps you should try some spelling variations:
nuoc sach » nguoi sach, hoc sach, cuoc cach
hanh lai » hanh lam, hanh tai, thanh lap
tang van » dang van, hoang van, trong van
hieu van » hieu va, thien van, lieu va
tu sach » thu sach, su sach, te sach
cau xuc » cam xuc, cau truc, chat xuc
lai cua » dai cua, hai cua, lai chau
va hanh » van hanh, va thanh, va danh
cau luc » cau truc, cau phuc
van hoc » van hoa
ky tang » ky nang, ky dang, kho tang
cua tre » cua te, cuu tre, cua triet

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((tu sach) or (nuoc sach)) ky tang van hoc. hieu van ((cau xuc) OR (cau luc)) va hanh lai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (nuoc sach)) ky tang van hoc. hieu van ((cau xuc) OR (cau luc)) va hanh lai cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) or (nuoc sach)) ky tang van hoc. hieu van ((cau xuc) OR (cau luc)) va hanh lai cua tre".
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (nuoc sach)) ky tang van hoc. hieu van ((cau xuc) OR (cau luc)) va hanh lai cua tre*.