Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
dang hanh » dang thanh, ban hanh, dang van
thuc dang » thuoc dang, thuc dan, thuc dung
hanh vai » hanh vi, hanh va, hanh tai
sach ky » sac ky, sach y, sach ty
vai cua » dai cua, hai cua, lai cua
hieu va » lieu va, hieu qua
su sach » so sach, vu sach
hieu ha » hieu hoa, hieu ca, hieu xa
nang ma » tang ma, sang ma, nang cao
nang xa » nang x, lang xa, mang xa

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 ky ((nang xa) OR (nang ma)) hoi. ((hieu ha) OR (hieu va)) am thuc dang hanh vai cua triet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ky ((nang xa) OR (nang ma)) hoi. ((hieu ha) or (hieu va)) am thuc dang hanh vai cua triet~".
• Adding a wildcard symbol may retrieve word variants: su sach ky ((nang xa) OR (nang ma)) hoi. ((hieu ha) or (hieu va)) am thuc dang hanh vai cua triet*.