Perhaps you should try some spelling variations:
cua triet » su triet, va triet
cua viet » ca viet, hoa viet, cua vat
cac thuc » cach thuc, cac thu, can thuc
thanh ve » hanh ve, thanh va, thanh vien
va thanh » gia thanh, ban thanh, va tinh
thuc va » thuc vat, thuc dan, thuc day
co sach » bo sach, cuon sach, hoc sach
nang xa » nang x, lang xa, nang ma
so sanh » do sanh
hieu va » lieu va, hieu qua
y nang » ky nang, ly nang, v nang

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((co sach) or (so sanh)) y nang xa hoi. hieu va cac thuc va thanh ve ((cua triet) OR (cua viet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((co sach) OR (so sanh)) y nang xa hoi. hieu va cac thuc va thanh ve ((cua triet) OR (cua viet)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((co sach) or (so sanh)) y nang xa hoi. hieu va cac thuc va thanh ve ((cua triet) OR (cua viet))".
• Adding a wildcard symbol may retrieve word variants: ((co sach) or (so sanh)) y nang xa hoi. hieu va cac thuc va thanh ve ((cua triet) OR (cua viet))*.