Perhaps you should try some spelling variations:
nam thuoc » nam thuc, nam thu, nha thuoc
thuoc ban » thuoc tan, thuoc dang, thu ban
hieu van » hieu va, thien van, lieu va
ban hanh » ban hang
ky lang » ky nang, ky dang, ky tang
mai hoi » mai khoi, lai hoi, mai doi
dai hoi » dai hoc, dai hai, dai moi
hanh di » hanh vi, hanh de, hang di
tu sac » tu sach, tu cac, tu san
sac ky » cac ky, sai ky
di cua » dai cua, doi cua, de cua
cua te » cua tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sac ky lang ((mai hoi) OR (dai hoi)). hieu van nam thuoc ban hanh di cua te~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sac ky lang ((mai hoi) OR (dai hoi)). hieu van nam thuoc ban hanh di cua te".
• Adding a wildcard symbol may retrieve word variants: tu sac ky lang ((mai hoi) OR (dai hoi)). hieu van nam thuoc ban hanh di cua te*.