Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
hanh vai » hanh vi, hanh va, hanh tai
so sach » so sanh, bo sach, hoc sach
co sach » bo sach, cuon sach, hoc sach
nang xa » nang x, lang xa, nang ma
hieu ve » hieu va, hieu van
cam duc » cam xuc, cao duc, pham duc
va hanh » van hanh, va thanh, va danh
vai cua » dai cua, hai cua, lai cua
y nang » ky nang, ly nang, v nang

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) OR (co sach)) y nang xa hoi. ((hieu ve) or (hieu qua)) cam duc va hanh vai cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((so sach) OR (co sach)) y nang xa hoi. ((hieu ve) OR (hieu qua)) cam duc va hanh vai cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((so sach) OR (co sach)) y nang xa hoi. ((hieu ve) or (hieu qua)) cam duc va hanh vai cua triet".
• Adding a wildcard symbol may retrieve word variants: ((so sach) OR (co sach)) y nang xa hoi. ((hieu ve) or (hieu qua)) cam duc va hanh vai cua triet*.