Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
thuc day » thuc dan, thuc vat
thuc va » thuc vat, thuc dan
so sach » bo sach, co sach, hoc sach
so sanh » do sanh
nang xa » nang x, lang xa, nang ma
qua cam » qua cham, qua cac, qua ca
y nang » ky nang, ly nang, v nang
vi cua » vai cua, di 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) OR (so sanh)) y nang xa hoi. hieu qua cam ((thuc va) OR (thuc day)) hanh vi cua triet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((so sach) or (so sanh)) y nang xa hoi. hieu qua cam ((thuc va) OR (thuc day)) hanh vi cua triet~".
• Adding a wildcard symbol may retrieve word variants: ((so sach) or (so sanh)) y nang xa hoi. hieu qua cam ((thuc va) OR (thuc day)) hanh vi cua triet*.