Perhaps you should try some spelling variations:
cua thuoc » nha thuoc, cay thuoc, cua nuoc
van thanh » ban thanh, van tuan
hieu van » hieu va, thien van, lieu va
nang mai » nang tai, lang mai, nang cai
thanh vi » hanh vi, thanh va, thanh ve
xuc van » duc van, luc van, vuc van
tu sach » thu sach, su sach, te sach
hieu ve » hieu va
nang ma » tang ma, sang ma, nang cao
vi cua » vai cua, di cua

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 y ((nang mai) OR (nang ma)) hoi. ((hieu ve) or (hieu van)) cam xuc van thanh vi cua thuoc~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach y ((nang mai) OR (nang ma)) hoi. ((hieu ve) OR (hieu van)) cam xuc van thanh vi cua thuoc.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach y ((nang mai) OR (nang ma)) hoi. ((hieu ve) or (hieu van)) cam xuc van thanh vi cua thuoc".
• Adding a wildcard symbol may retrieve word variants: tu sach y ((nang mai) OR (nang ma)) hoi. ((hieu ve) or (hieu van)) cam xuc van thanh vi cua thuoc*.