Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
hieu van » hieu va, thien van, lieu va
cac truc » cau truc, cac tru, cac trung
hanh lai » hanh lam, hanh tai, thanh lap
su sach » so sach, vu sach
van cac » van hac, van cau, van bac
truc va » thuc va, thuc vat, trung va
va hanh » van hanh, va thanh, va danh
lai cua » dai cua, hai cua, lai chau
y nang » ly nang, v nang, may nang
ma hoi » mai hoi, ma hoa, me hoi

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

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