Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
cua triet » cua viet, su triet, va triet
toc sach » hoc sach, doc sach, thuoc sach
cham duc » pham duc, cham soc, pham duy
thanh va » thanh van, hanh va, thanh ha
sach ky » sac ky, sach y, sach ty
ky tang » ky nang, ky dang, kho tang
hieu ve » hieu va, hieu van
ve cham » va cham, ve chat, vu cham
duc ban » duc tan, duc van, dua ban
ha hoi » hoa hoi, ha noi, va hoi
va cua » va chua, via cua, ca cua

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: toc sach ky tang ((ha hoi) or (xa hoi)). hieu ve cham duc ban thanh va cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc sach ky tang ((ha hoi) OR (xa hoi)). hieu ve cham duc ban thanh va cua triet.
• Adding a wildcard symbol may retrieve word variants: toc sach ky tang ((ha hoi) or (xa hoi)). hieu ve cham duc ban thanh va cua triet*.