Perhaps you should try some spelling variations:
nam thuoc » nam thuc, nam thu, nha thuoc
cau treo » cau theo, cau tren, cau triet
dieu cua » dieu tra
thanh va » thanh van, hanh va, thanh ha
va thanh » gia thanh, ban thanh, va tinh
thuoc va » thuc va, thuoc ma, thuong va
bieu cua » hieu cua, ben cua, dien cua
va cau » van cau, va cac, va dau
tu sac » tu sach, tu cac, tu bac
nang o » nang co, nang ho, nang ro
tu san » thu san, tu ban, tu can
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) OR (tu san)) ky nang o hoi. ((bieu cua) or (dieu cua)) nam thuoc va thanh va cau treo~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sac) OR (tu san)) ky nang o hoi. ((bieu cua) OR (dieu cua)) nam thuoc va thanh va cau treo.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sac) OR (tu san)) ky nang o hoi. ((bieu cua) or (dieu cua)) nam thuoc va thanh va cau treo".
• Adding a wildcard symbol may retrieve word variants: ((tu sac) OR (tu san)) ky nang o hoi. ((bieu cua) or (dieu cua)) nam thuoc va thanh va cau treo*.