Perhaps you should try some spelling variations:
cua triet » cua viet, su triet
va triet » va thiet, va trien, ve triet
thuc day » thuc dan, thuc vat
danh dai » danh dau, danh di, danh sai
tu sach » thu sach, su sach, te sach
thuc va » thuc vat, thuc dan
hieu va » lieu va, hieu qua
nang co » nang cao, nang doc, nang noi
y nang » ky nang, ly nang, v nang
va cam » va cham, va cac, va cao
co loi » co hoi

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 sach y nang co loi. hieu va cam ((thuc va) OR (thuc day)) danh dai ((cua triet) OR (va triet))~.
• Adding a wildcard symbol may retrieve word variants: tu sach y nang co loi. hieu va cam ((thuc va) or (thuc day)) danh dai ((cua triet) or (va triet))*.