Perhaps you should try some spelling variations:
nam thuoc » nam thuc, nam thu, nha thuoc
bieu cua » dieu cua, ben cua, dien cua
hieu cua » hieu qua, dieu cua, hieu ca
thuoc va » thuc va, thuoc ma, thuong va
va thanh » gia thanh, ban thanh, va tinh
thanh va » thanh van, hanh va, thanh ha
cau treo » cau theo, cau tren, cau triet
tu sac » tu sach, tu cac, tu san
sac ky » cac ky, sai ky
nang o » nang co, nang ho, nang ro
va cau » van cau, va cac, va dau
o hoi » co hoi, o hoc, o hai

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 nang o hoi. ((bieu cua) OR (hieu cua)) nam thuoc va thanh va cau treo~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sac ky nang o hoi. ((bieu cua) OR (hieu cua)) nam thuoc va thanh va cau treo".
• Adding a wildcard symbol may retrieve word variants: tu sac ky nang o hoi. ((bieu cua) OR (hieu cua)) nam thuoc va thanh va cau treo*.