Perhaps you should try some spelling variations:
thuoc sach » hoc sach, nuoc sach, thuat sach
hanh vai » hanh vi, hanh va, hanh tai
tu sach » thu sach, su sach, te sach
vai cua » dai cua, hai cua, lai cua
chuc va » thuc va, thuc vat
phuc va » phuc vu, thuc va, thuc vat
lan dau » van dau, ban dau, han dau
thi lan » thi hanh, thi nang, thi lien
ly hang » ly quang
cua tre » cua te, cuu tre, cua triet
hang x » nang x, hoang xa, chang xu

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 (thuoc sach)) ly hang x ho. thi lan dau ((phuc va) or (chuc va)) hanh vai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (thuoc sach)) ly hang x ho. thi lan dau ((phuc va) OR (chuc va)) hanh vai cua tre.
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (thuoc sach)) ly hang x ho. thi lan dau ((phuc va) or (chuc va)) hanh vai cua tre*.