Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
thuoc ban » thuoc tan, thuoc dang, thu ban
cao thuoc » cay thuoc, cua thuoc, nam thuoc
va triet » va thiet, va trien, ve triet
thanh va » thanh van, hanh va, thanh ha
nang han » nang phan, nang hang, nang hanh
sach ky » sac ky, sach y, sach ty
vu sach » vu bach, su sach, vu khach
hieu va » hieu qua
nang ha » nang hai, nang hoa, lang ha
va va » va van, va vua, va vai

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

• Performing a fuzzy search may retrieve terms with similar spellings: vu sach ky ((nang ha) or (nang han)) hoi. ((hieu va) or (lieu va)) cao thuoc ban thanh va va triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sach ky ((nang ha) OR (nang han)) hoi. ((hieu va) OR (lieu va)) cao thuoc ban thanh va va triet.
• Adding a wildcard symbol may retrieve word variants: vu sach ky ((nang ha) or (nang han)) hoi. ((hieu va) or (lieu va)) cao thuoc ban thanh va va triet*.