Perhaps you should try some spelling variations:
cua thuoc » nha thuoc, cay thuoc, cua nuoc
van thanh » ban thanh, van tuan
thanh va » thanh van, hanh va, thanh ha
thu sach » thuat sach, thuoc sach, thu hoach
nang mai » nang ma, nang tai, lang mai
xuc van » duc van, luc van, vuc van
tu sach » su sach, te sach, tu cach
mai hoi » mai khoi, dai hoi, lai hoi
ly nang » ky nang, ly hang, ly vang
va dao » ca dao
va cua » va chua, via cua, ca 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 nang mai hoi. hieu ((va cao) OR (va dao)) xuc van thanh va cua thuoc~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) OR (thu sach)) ly nang mai hoi. hieu ((va cao) OR (va dao)) xuc van thanh va cua thuoc".
• Adding a wildcard symbol may retrieve word variants: ((tu sach) OR (thu sach)) ly nang mai hoi. hieu ((va cao) OR (va dao)) xuc van thanh va cua thuoc*.