Perhaps you should try some spelling variations:
quan thanh » ban thanh, van thanh
thanh di » thanh doi, thanh de, thanh do
te sach » toc sach
sach ky » sac ky, sach y, sach ty
cao hoi » cau hoi, co hoi, cao hoc
va chat » van chat, va phat, cao chat
cua tre » cua te, cuu tre, cua triet
va cam » va cham, va cac, va cao
di cua » dai cua, doi cua, de cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach ky nang cao hoi. hieu ((va cam) or (va chat)) qua quan thanh di cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky nang cao hoi. hieu ((va cam) OR (va chat)) qua quan thanh di cua tre.
• Adding a wildcard symbol may retrieve word variants: te sach ky nang cao hoi. hieu ((va cam) or (va chat)) qua quan thanh di cua tre*.