Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
chat huu » pham huu
thanh di » thanh doi, thanh de, thanh do
sach ky » sac ky, sach y, sach ty
va chat » van chat, va phat, cao chat
huu gia » cuu giai, thue gia, cuu giao
cua tre » cua te, cuu tre, cua triet
ro hoi » co hoi, mo hoi, ro doi
di cua » dai cua, doi cua, de cua
o hoi » co hoi, o hoc, o hai

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 nang ((ro hoi) or (o hoi)). lieu va chat huu gia thanh di cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach ky nang ((ro hoi) OR (o hoi)). lieu va chat huu gia thanh di cua tre.
• Adding a wildcard symbol may retrieve word variants: thu sach ky nang ((ro hoi) or (o hoi)). lieu va chat huu gia thanh di cua tre*.