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
ban hanh » ban hang
tham duc » pham duc, tham du, than duc
van tham » van thanh, van tuan, van chat
thu nang » thi nang, thu hang, thu bang
duc ban » duc tan, duc van, dua ban
so sach » so sanh, bo sach, co sach
lai cua » dai cua, hai cua, lai chau
su sach » vu sach
x hoi » o hoi, x ho, 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) OR (so sach)) thu nang ((x hoi) or (xa hoi)). hieu van tham duc ban hanh lai cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (so sach)) thu nang ((x hoi) OR (xa hoi)). hieu van tham duc ban hanh lai cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((su sach) OR (so sach)) thu nang ((x hoi) or (xa hoi)). hieu van tham duc ban hanh lai cua triet".
• Adding a wildcard symbol may retrieve word variants: ((su sach) OR (so sach)) thu nang ((x hoi) or (xa hoi)). hieu van tham duc ban hanh lai cua triet*.