Perhaps you should try some spelling variations:
cua thuoc » nha thuoc, cay thuoc, cua nuoc
hieu van » hieu va, thien van, lieu va
van cham » van chat, van tham, va cham
cham duc » pham duc, cham soc, pham duy
ban hanh » ban hang
hanh vai » hanh vi, hanh va, hanh tai
ky dang » ky nang, ky danh
dang ha » dong ha, dung ha, lang ha
duc ban » duc tan, duc van, dua ban
vai cua » dai cua, hai cua, lai cua
su sac » su sach, su xac
su cac » tu cac, su cao, su can

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((su sac) OR (su cac)) ky dang ha noi. hieu van cham duc ban hanh vai cua thuoc~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((su sac) OR (su cac)) ky dang ha noi. hieu van cham duc ban hanh vai cua thuoc".
• Adding a wildcard symbol may retrieve word variants: ((su sac) OR (su cac)) ky dang ha noi. hieu van cham duc ban hanh vai cua thuoc*.