Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
hanh vai » hanh vi, hanh va, hanh tai
su sach » so sach, vu sach
va hanh » van hanh, va thanh, va danh
vai cua » dai cua, hai cua, lai cua
sach v » sach va, sach y, sach 2
v nang » va nang, vu nang, van nang
ve cac » vien cac
x hoi » o hoi, x ho, 5 hoi
du va » dau va, tu va, su va

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 v nang ((x hoi) OR (xa hoi)). hieu ((ve cac) or (va cac)) du va hanh vai cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach v nang ((x hoi) OR (xa hoi)). hieu ((ve cac) OR (va cac)) du va hanh vai cua triet*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach v nang ((x hoi) OR (xa hoi)). hieu ((ve cac) or (va cac)) du va hanh vai cua triet*".