Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
hieu van » hieu va, thien van, lieu va
hanh lai » hanh lam, hanh tai, thanh lap
su sach » so sach, vu sach
hieu ve » hieu va
cam tuc » cam xuc, cam tu, nam thuc
xa hanh » xa thanh, xa khanh, va hanh
lai cua » dai cua, hai cua, lai chau
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: su sach y nang ((xa hoi) or (ma hoa)). ((hieu ve) OR (hieu van)) cam tuc xa hanh lai cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach y nang ((xa hoi) OR (ma hoa)). ((hieu ve) OR (hieu van)) cam tuc xa hanh lai cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach y nang ((xa hoi) or (ma hoa)). ((hieu ve) OR (hieu van)) cam tuc xa hanh lai cua triet".
• Adding a wildcard symbol may retrieve word variants: su sach y nang ((xa hoi) or (ma hoa)). ((hieu ve) OR (hieu van)) cam tuc xa hanh lai cua triet*.