Perhaps you should try some spelling variations:
cua thuoc » nha thuoc, cay thuoc, cua quoc
cham duc » pham duc, cham soc, pham duy
tan hanh » tan thanh, tang hanh, toan hanh
hanh tai » thanh tai, hang tai, han tai
cua nuoc » cua quoc, cua nguoi, nha nuoc
nang ha » nang hai, nang han, nang hoa
hieu ve » hieu van
hieu va » lieu va, hieu qua
su sac » su sach, su cac, su xac
sac ky » cac ky, sai ky

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sac ky nang ha noi. ((hieu ve) or (hieu va)) cham duc tan hanh tai ((cua thuoc) or (cua nuoc))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sac ky nang ha noi. ((hieu ve) OR (hieu va)) cham duc tan hanh tai ((cua thuoc) OR (cua nuoc)).
• Adding a wildcard symbol may retrieve word variants: su sac ky nang ha noi. ((hieu ve) or (hieu va)) cham duc tan hanh tai ((cua thuoc) or (cua nuoc))*.