Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
hieu van » hieu va, thien van, lieu va
van hanh » van thanh, ban hanh, van anh
su sach » so sach
vu sach » vu khach
ly hang » ly quang
nam xua » nam cua, nam mua, nam qua
xua van » xua va, qua van, cua van
va hoi » xa hoi, va hoc, va hoa
vi cua » vai cua, di cua
bach » cach, bac

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 (((vu sach) OR (vu bach)))) ly hang va hoi. hieu van nam xua van hanh vi cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (((vu sach) OR (vu bach)))) ly hang va hoi. hieu van nam xua van hanh vi cua triet*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((su sach) or (((vu sach) OR (vu bach)))) ly hang va hoi. hieu van nam xua van hanh vi cua triet*".