Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
sua nham » cua nha, cua nhan, qua nhat
qua nham » qua nhat, qua cham, quan pham
hanh di » hanh vi, hanh de, hang di
va hanh » van hanh, va thanh, va danh
thuc va » thuc vat, thuc dan, thuc day
so sach » so sanh, bo sach, co sach
ky danh » ky anh
ky dang » ky nang
di cua » dai cua, doi cua, de cua

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: so sach ((ky dang) OR (ky danh)) xa hoi. hieu ((qua nham) OR (sua nham)) thuc va hanh di cua triet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "so sach ((ky dang) or (ky danh)) xa hoi. hieu ((qua nham) OR (sua nham)) thuc va hanh di cua triet~".
• Adding a wildcard symbol may retrieve word variants: so sach ((ky dang) or (ky danh)) xa hoi. hieu ((qua nham) OR (sua nham)) thuc va hanh di cua triet*.