Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
sach thu » sach thue, sach thieu, sach tham
thu nang » thi nang, thu hang, thu bang
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
va hanh » van hanh, va thanh, va danh
lai cua » dai cua, hai cua, lai chau
x hoi » xa hoi, o hoi, 5 hoi
xu va » xu van, 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 thu nang ((x hoi) or (x ho)). ((hieu ve) or (hieu van)) chao xu va hanh lai cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach thu nang ((x hoi) OR (x ho)). ((hieu ve) OR (hieu van)) chao xu va hanh lai cua triet.
• Adding a wildcard symbol may retrieve word variants: su sach thu nang ((x hoi) or (x ho)). ((hieu ve) or (hieu van)) chao xu va hanh lai cua triet*.