Perhaps you should try some spelling variations:
thanh vai » thanh hai, thanh van, thanh tai
va thanh » gia thanh, ban thanh, va tinh
bo sach » co sach, hoc sach
vai cua » dai cua, hai cua, lai cua
va chat » van chat, cao chat, hoa chat
sach tu » sach thu, cach tu, sach ty
hang ca » hang va, nang cao, hang tai
hang xa » hoang xa, hang va, lang xa
cua tre » cua te, cuu tre, cua triet
xuc va » duc va, tuc va, luc va

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

• Performing a fuzzy search may retrieve terms with similar spellings: bo sach tu ((hang xa) or (hang ca)) hoi. hieu ((va chat) OR (va phat)) xuc va thanh vai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: bo sach tu ((hang xa) OR (hang ca)) hoi. hieu ((va chat) OR (va phat)) xuc va thanh vai cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "bo sach tu ((hang xa) or (hang ca)) hoi. hieu ((va chat) OR (va phat)) xuc va thanh vai cua tre".
• Adding a wildcard symbol may retrieve word variants: bo sach tu ((hang xa) or (hang ca)) hoi. hieu ((va chat) OR (va phat)) xuc va thanh vai cua tre*.