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

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) or (dung ha)) noi. hieu van cham duc van hanh vai cua thuoc~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sac) OR (su cac)) ky ((dang ha) OR (dung ha)) noi. hieu van cham duc van hanh vai cua thuoc.
• Adding a wildcard symbol may retrieve word variants: ((su sac) or (su cac)) ky ((dang ha) or (dung ha)) noi. hieu van cham duc van hanh vai cua thuoc*.