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 dua » chay dua, cham giua, pham duc
ky dang » ky danh
dua ban » dia ban, cua ban, qua ban
hanh va » hang va
su xac » pu xac, 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 xac ((ky dang) or (ky nang)) ha noi. hieu van cham dua ban ((hanh va) OR (hanh vi)) cua thuoc~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su xac ((ky dang) OR (ky nang)) ha noi. hieu van cham dua ban ((hanh va) OR (hanh vi)) cua thuoc.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su xac ((ky dang) or (ky nang)) ha noi. hieu van cham dua ban ((hanh va) OR (hanh vi)) cua thuoc".
• Adding a wildcard symbol may retrieve word variants: su xac ((ky dang) or (ky nang)) ha noi. hieu van cham dua ban ((hanh va) OR (hanh vi)) cua thuoc*.