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

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