Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
thanh va » thanh van, hanh va, thanh ha
su triet » su tien, ve triet
su sach » so sach, vu sach
cua hoi » cua moi
hieu va » lieu va, hieu qua
va pham » van pham, va phat, va phap
duc ban » duc tan, duc van, dua ban
su viet » so viet
y hang » ly hang, ty hang, yu hang
ca hoi » cau hoi, xa hoi, co hoi

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 (cua hoi)). hieu va pham duc ban thanh va ((su triet) or (su viet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach y hang ((ca hoi) OR (cua hoi)). hieu va pham duc ban thanh va ((su triet) OR (su viet)).
• Adding a wildcard symbol may retrieve word variants: su sach y hang ((ca hoi) or (cua hoi)). hieu va pham duc ban thanh va ((su triet) or (su viet))*.