Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
giao cua » gian cua, gia cua, giau cua
thu sach » thuat sach, thuoc sach, thu hoach
cac duc » cac du, cao duc, cac dac
va tinh » may tinh
va hinh » va chinh, va kinh, va sinh
tu sach » su sach, te sach, tu cach
hieu ve » hieu va, hieu van
y nang » ky nang, ly nang, v nang
ve cac » va cac, vien cac
x hoi » xa hoi, o hoi, x ho

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: ((tu sach) OR (thu sach)) y nang x hoi. hieu ve cac duc ((va hinh) OR (va tinh)) giao cua triet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) or (thu sach)) y nang x hoi. hieu ve cac duc ((va hinh) OR (va tinh)) giao cua triet~".
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (thu sach)) y nang x hoi. hieu ve cac duc ((va hinh) OR (va tinh)) giao cua triet*.