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

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) OR (su cac)) ky tang xa hoi. hieu van 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) OR (su cac)) ky tang xa hoi. hieu van lam thuoc va thanh ((vai cua) or (hai cua)) tre~".
• Adding a wildcard symbol may retrieve word variants: ((su xac) OR (su cac)) ky tang xa hoi. hieu van lam thuoc va thanh ((vai cua) or (hai cua)) tre*.