Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
kho tang » cao tang
ky tang » ky nang, ky dang, ky trong
qua cac » cua cac
va hanh » van hanh, va thanh, va danh
su cac » tu cac, su cao, su can
ma hoi » mai hoi, ma hoa, me hoi
vi cua » vai cua, di cua
du va » dau va, tu va, su va

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: su cac ((ky tang) OR (kho tang)) ((ma hoi) or (xa hoi)). hieu qua cac du va hanh vi cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su cac ((ky tang) OR (kho tang)) ((ma hoi) OR (xa hoi)). hieu qua cac du va hanh vi cua triet*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su cac ((ky tang) OR (kho tang)) ((ma hoi) or (xa hoi)). hieu qua cac du va hanh vi cua triet*".