Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
danh dai » danh dau, danh di, danh sai
hieu va » lieu va
thuc va » thuc vat, thuc dan, thuc day
va danh » va dinh, va dan, va hanh
tu sac » tu sach, tu cac, tu san
sac ky » cac ky, sai ky
co hoi » co hoc

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

• If you are trying to use Boolean operators, they must be ALL CAPS: tu sac ky nang ((co loi) OR (co hoi)). ((hieu va) OR (hieu qua)) am thuc va danh dai cua triet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sac ky nang ((co loi) OR (co hoi)). ((hieu va) or (hieu qua)) am thuc va danh dai cua triet~".
• Adding a wildcard symbol may retrieve word variants: tu sac ky nang ((co loi) OR (co hoi)). ((hieu va) or (hieu qua)) am thuc va danh dai cua triet*.