Perhaps you should try some spelling variations:
cua thuoc » nha thuoc, cay thuoc, cua nuoc
manh hanh » xanh hanh, danh thanh, minh thanh
hanh dai » hanh tai, hanh dao, vanh dai
cao duc » dao duc, cao suc, giao duc
cam duc » cam xuc, pham duc, nam duoc
sach vu » sach va, sach tu, sach uu
te sach » toc sach
mai hoi » mai khoi, dai hoi, lai hoi
vu nang » vuc nang, va nang, vu dang
hieu ve » hieu va, hieu van
ma hoi » xa hoi, ma hoa, me hoi

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 vu nang ((ma hoi) or (mai hoi)). hieu ve ((cam duc) or (cao duc)) manh hanh dai cua thuoc~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach vu nang ((ma hoi) OR (mai hoi)). hieu ve ((cam duc) OR (cao duc)) manh hanh dai cua thuoc.
• Adding a wildcard symbol may retrieve word variants: te sach vu nang ((ma hoi) or (mai hoi)). hieu ve ((cam duc) or (cao duc)) manh hanh dai cua thuoc*.