Perhaps you should try some spelling variations:
cua thuoc » nha thuoc, cay thuoc, cua nuoc
van thanh » ban thanh, van tuan
thanh vi » hanh vi, thanh va, thanh ve
thu sach » thuat sach, thuoc sach, thu hoach
xuc van » duc van, luc van, vuc van
tu sach » su sach, te sach, tu cach
mai hoi » mai khoi, dai hoi, lai hoi
van mai » van hai, van ai, ban mai
va dao » ca dao
ly van » le van, ly va, ly von
vi cua » vai cua, di cua
va cao » va cac, va co, va bao

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((tu sach) or (thu sach)) ly van mai hoi. hieu ((va cao) or (va dao)) xuc van thanh vi cua thuoc~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (thu sach)) ly van mai hoi. hieu ((va cao) OR (va dao)) xuc van thanh vi cua thuoc.
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (thu sach)) ly van mai hoi. hieu ((va cao) or (va dao)) xuc van thanh vi cua thuoc*.