Perhaps you should try some spelling variations:
cuu thuoc » cua thuoc, cuu thuc, cay thuoc
hanh tai » thanh tai, hang tai, han tai
ban hanh » ban hang
van tham » van thanh, van tuan, van chat
van cham » van chat, va cham, van pham
dang ha » dong ha, dung ha, lang ha
ky dang » ky nang, ky danh
duc ban » duc tan, duc van, dua ban
tai cuu » tai cuc, tai buu, tai cua
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 noi. hieu ((van cham) or (van tham)) duc ban hanh tai cuu thuoc~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sac) OR (su xac)) ky dang ha noi. hieu ((van cham) OR (van tham)) duc ban hanh tai cuu thuoc.
• Adding a wildcard symbol may retrieve word variants: ((su sac) or (su xac)) ky dang ha noi. hieu ((van cham) or (van tham)) duc ban hanh tai cuu thuoc*.