Perhaps you should try some spelling variations:
lam thuoc » nam thuoc, am thuc, cay thuoc
hieu van » thien van, lieu va, hieu ve
thuoc va » thuc va, thuoc ma, thuong va
va thanh » gia thanh, ban thanh, va tinh
ky tang » ky nang, ky dang, kho tang
tang xa » trang xa, tang ma, lang xa
hai cua » thai cua, dai cua, hoi cua
hieu va » lieu va, hieu qua
vai cua » dai cua, lai cua, bai cua
su xac » pu xac, su cac
xac ky » cac ky, sac ky, bac ky

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

• If you are trying to use Boolean operators, they must be ALL CAPS: su xac ky tang xa hoi. ((hieu van) OR (hieu va)) lam thuoc va thanh ((vai cua) OR (hai cua)) tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su xac ky tang xa hoi. ((hieu van) OR (hieu va)) lam thuoc va thanh ((vai cua) or (hai cua)) tre~".
• Adding a wildcard symbol may retrieve word variants: su xac ky tang xa hoi. ((hieu van) OR (hieu va)) lam thuoc va thanh ((vai cua) or (hai cua)) tre*.