Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
hieu van » hieu va, thien van, lieu va
danh vai » danh sai, danh va, doanh van
tu sach » thu sach, su sach, te sach
hieu ve » hieu va
thuc va » thuc vat, thuc dan, thuc day
va danh » va dinh, va dan, va hanh
vai cua » dai cua, hai cua, lai cua
y nang » ky nang, ly nang, v nang
x hoi » xa hoi, o hoi, x ho

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach y nang x hoi. ((hieu ve) or (hieu van)) am thuc va danh vai cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach y nang x hoi. ((hieu ve) OR (hieu van)) am thuc va danh vai cua triet.
• Adding a wildcard symbol may retrieve word variants: tu sach y nang x hoi. ((hieu ve) or (hieu van)) am thuc va danh vai cua triet*.