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
vu nang » vuc nang, va nang, vu dang
hieu ve » hieu va, hieu van
va hanh » van hanh, va thanh, va danh
vai cua » dai cua, hai cua, lai cua
v nang » va nang, van nang, voi nang
ve cac » va cac, vien cac
cac tu » cac thu, cach tu, cac du
x hoi » xa hoi, o hoi, 5 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 ((v nang) OR (vu nang)) ((x hoi) or (x ho)). hieu ve cac tu va hanh vai cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ((v nang) OR (vu nang)) ((x hoi) OR (x ho)). hieu ve cac tu va hanh vai cua triet*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ((v nang) OR (vu nang)) ((x hoi) or (x ho)). hieu ve cac tu va hanh vai cua triet*".