Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
sang tay » sang tao, sang tai, bang tay
sang tac » sang tao, sang tai, sang than
van hanh » van thanh, ban hanh, van anh
su sach » so sach, vu sach
duc van » duc va, duc tan, duc manh
hanh di » hanh vi, hanh de, hang di
hieu v » hieu va, hieu ve, hieu 2
v pham » vi pham, d pham
di cua » dai cua, doi cua, de 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: su sach _ ((sang tay) OR (sang tac)) hoi. hieu v pham duc van hanh di cua triet~.
• Adding a wildcard symbol may retrieve word variants: su sach _ ((sang tay) or (sang tac)) hoi. hieu v pham duc van hanh di cua triet*.