Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
va thanh » gia thanh, ban thanh, va tinh
van hanh » van thanh, ban hanh, van anh
cac truc » cau truc, cac tru, cac trung
qua cac » cua cac
tu sach » thu sach, su sach, te sach
y nang » ky nang, ly nang, v nang
me hoi » le hoi
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 qua cac truc ((van hanh) or (va thanh)) 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 qua cac truc ((van hanh) OR (va thanh)) ca cua triet.
• Adding a wildcard symbol may retrieve word variants: tu sach y nang ((me hoi) or (ma hoa)). hieu qua cac truc ((van hanh) or (va thanh)) ca cua triet*.