Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
thu sach » tu sach, thuat sach, thuoc sach
nang doc » nang luc
danh dai » danh dau, danh di, danh sai
doc hai » hoc hai, duc hai, do hai
thuc va » thuc vat, thuc dan, thuc day
va danh » va dinh, va dan, va hanh
y nang » ky nang, ly nang, v nang
va lam » van lam, va lap
va am » va cam

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: thu sach y nang doc hai. hieu ((va am) OR (va lam)) thuc va danh dai cua triet~.
• Adding a wildcard symbol may retrieve word variants: thu sach y nang doc hai. hieu ((va am) or (va lam)) thuc va danh dai cua triet*.