Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
ban hanh » ban hang
tu sach » thu sach, su sach, te sach
hieu ve » hieu va, hieu van
cac cuc » cac cuoc, cac cua, cac nuoc
cuc ban » cua ban, cac ban, cuu ban
hanh va » hang va, hanh vi
y nang » ky nang, ly nang, v nang
ve cac » va cac, vien cac
va cua » va chua, via cua, ca cua
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: tu sach y nang ((x hoi) or (x ho)). hieu ve cac cuc ban hanh va cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach y nang ((x hoi) OR (x ho)). hieu ve cac cuc ban hanh va cua triet.
• Adding a wildcard symbol may retrieve word variants: tu sach y nang ((x hoi) or (x ho)). hieu ve cac cuc ban hanh va cua triet*.