Perhaps you should try some spelling variations:
sach tham » sach nha
tham nang » nham nang, tham lang, tham nhung
cua triet » cua viet, su triet, va triet
hieu van » hieu va, thien van, lieu va
tham duc » tham du, than duc, thach duc
ban hanh » ban hang
hanh lai » hanh lam, hanh tai, thanh lap
su sach » so sach, vu sach
lai cua » dai cua, hai cua, lai chau
x hoi » xa hoi, o hoi, x ho

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 tham nang x hoi. hieu van ((tham duc) or (pham duc)) ban hanh lai cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach tham nang x hoi. hieu van ((tham duc) OR (pham duc)) ban hanh lai cua triet.
• Adding a wildcard symbol may retrieve word variants: su sach tham nang x hoi. hieu van ((tham duc) or (pham duc)) ban hanh lai cua triet*.