Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
van dinh » van minh, van dich, xuan dinh
tu sach » thu sach, su sach, te sach
hieu va » lieu va, hieu qua
va dinh » va kinh, va tinh, vu dinh
y nang » ky nang, ly nang, v nang
me hoi » le hoi
cac tu » cac thu, cach tu, cac du
ca cua » co cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach y nang ((me hoi) or (ma hoa)). hieu va cac tu ((va dinh) OR (van dinh)) ca cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach y nang ((me hoi) OR (ma hoa)). hieu va cac tu ((va dinh) OR (van dinh)) ca cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach y nang ((me hoi) or (ma hoa)). hieu va cac tu ((va dinh) OR (van dinh)) ca cua triet".
• Adding a wildcard symbol may retrieve word variants: tu sach y nang ((me hoi) or (ma hoa)). hieu va cac tu ((va dinh) OR (van dinh)) ca cua triet*.