Perhaps you should try some spelling variations:
thanh lai » thanh hai, thanh lap, thanh loi
ban thanh » ban hanh, ban hang
te sach » toc sach
sach ty » sach y, sach tu, sach thu
lai cua » dai cua, hai cua, lai chau
dao duc » giao duc, tao duoc
hieu ve » hieu va, hieu van
lang xa » lang ha, dang xay, lang van
nang ma » tang ma, sang ma, nang cao
cua te » cua tu

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 ty ((nang ma) or (lang xa)) hoi. hieu ve ((pham duc) or (dao duc)) ban thanh lai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ty ((nang ma) OR (lang xa)) hoi. hieu ve ((pham duc) OR (dao duc)) ban thanh lai cua te.
• Adding a wildcard symbol may retrieve word variants: te sach ty ((nang ma) or (lang xa)) hoi. hieu ve ((pham duc) or (dao duc)) ban thanh lai cua te*.