Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
cua triet » cua viet, su triet, va triet
can thuc » van thuc, cay thuc, san thuc
dan thuc » dan toc, am thuc
thanh vi » hanh vi, thanh va, thanh ve
su sach » so sach, vu sach
y hang » ly hang, ty hang, yu hang
ca hoi » cau hoi, cua hoi, co hoi
vi cua » vai cua, di cua

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 y hang ((ca hoi) OR (xa hoi)). lieu va ((can thuc) or (dan thuc)) ban thanh vi cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach y hang ((ca hoi) OR (xa hoi)). lieu va ((can thuc) OR (dan thuc)) ban thanh vi cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach y hang ((ca hoi) OR (xa hoi)). lieu va ((can thuc) or (dan thuc)) ban thanh vi cua triet".
• Adding a wildcard symbol may retrieve word variants: su sach y hang ((ca hoi) OR (xa hoi)). lieu va ((can thuc) or (dan thuc)) ban thanh vi cua triet*.