Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
sach ky » sac ky, sach y, sach ty
va danh » va dinh, va dan, dia danh
va hanh » van hanh, va thanh, ban hanh
so sach » so sanh, bo sach, co sach
hieu va » lieu va, hieu qua
van hoe » van hoa, van hoc, van hieu
van hoi » van hoa, van hoc, van loi
cac xuc » cam xuc, cac nuoc, chat xuc
vi cua » vai cua, di cua

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

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