Perhaps you should try some spelling variations:
chua thuoc » cua thuoc, chua thuc, nha thuoc
sach thu » sach thue, sach thieu, sach tham
ban hanh » ban hang
va chua » vua chua, ca chua, va chu
hanh va » hang va, hanh vi
cao duc » dao duc, cao suc, giao duc
te sach » toc sach
hieu ve » hieu va, hieu van
mang xa » lang xa, dang xay, mang 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 thu ((mang xa) or (mang may)) hoi. hieu ve ((pham duc) or (cao duc)) ban hanh va chua thuoc~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach thu ((mang xa) OR (mang may)) hoi. hieu ve ((pham duc) OR (cao duc)) ban hanh va chua thuoc.
• Adding a wildcard symbol may retrieve word variants: te sach thu ((mang xa) or (mang may)) hoi. hieu ve ((pham duc) or (cao duc)) ban hanh va chua thuoc*.