Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
va thanh » gia thanh, ban thanh, va tinh
nam thuc » nam thuoc, am thuc, nam thu
hieu va » lieu va, hieu qua
va hanh » van hanh, va danh, ban hanh
van hoe » van hoa, van hoc, van hieu
va nam » van nam, ha nam, va nay
sac ky » cac ky, sai ky
vi cua » vai cua, di cua
su sac » su sach, su cac, su xac

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sac ky nang ((van hoe) or (cao hieu)). hieu va nam thuc ((va hanh) OR (va thanh)) vi cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sac ky nang ((van hoe) OR (cao hieu)). hieu va nam thuc ((va hanh) OR (va thanh)) vi cua triet*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sac ky nang ((van hoe) or (cao hieu)). hieu va nam thuc ((va hanh) OR (va thanh)) vi cua triet*".