Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
thanh ban » thanh san, thanh van, thanh bac
ban thanh » ban hanh, ban hang
hieu van » hieu va, thien van, lieu va
thuc ban » thuoc ban, thuc dan, thu ban
cam thuc » am thuc, nam thuc, cam thu
van cam » van nam, van lam, van cau
ban cua » ban quan
su sach » so sach, vu sach
_ lang » o lang, _ land
y lang » o lang, tay lang, yen lang

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 bach)) ((y lang) OR (_ lang)) xa hoi. hieu van cam thuc ban thanh ban cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (vu bach)) ((y lang) OR (_ lang)) xa hoi. hieu van cam thuc ban thanh ban cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((su sach) or (vu bach)) ((y lang) OR (_ lang)) xa hoi. hieu van cam thuc ban thanh ban cua triet".
• Adding a wildcard symbol may retrieve word variants: ((su sach) or (vu bach)) ((y lang) OR (_ lang)) xa hoi. hieu van cam thuc ban thanh ban cua triet*.