Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
dang xay » dang van, van xay
cac thuc » cach thuc, cac thu, can thuc
thuc van » thuc vat, thuc dan, thuc va
van hanh » van thanh, ban hanh, van anh
su sach » so sach, vu sach
sach va » sach xa, sach ha, sach dao
hieu ve » hieu va, hieu van
hanh di » hanh vi, hanh de, hang di
ve cac » va cac, vien cac
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 va ((dang xay) OR (nang x)) hoi. hieu ve cac thuc van hanh di cua triet~.
• Adding a wildcard symbol may retrieve word variants: su sach va ((dang xay) or (nang x)) hoi. hieu ve cac thuc van hanh di cua triet*.