Perhaps you should try some spelling variations:
thanh cac » hanh cac, thanh bac, thanh ca
ban thanh » ban hanh, ban hang
te sach » toc sach
tu cham » toc cham, thi cham
cac chu » cac thu, cac che, cac khu
duc ban » duc tan, duc van, dua ban
vu cham » va cham, vu kham, qua cham
sach ky » sac ky, sach y, sach ty
ky tang » ky nang, ky dang, kho tang
chu tri » chua tri, chu thi, chu tai
ha hoi » hoa hoi, ha noi, va hoi

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach ky tang ((ha hoi) OR (xa hoi)). hieu ((vu cham) or (tu cham)) duc ban thanh cac chu tri~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky tang ((ha hoi) OR (xa hoi)). hieu ((vu cham) OR (tu cham)) duc ban thanh cac chu tri*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ky tang ((ha hoi) OR (xa hoi)). hieu ((vu cham) or (tu cham)) duc ban thanh cac chu tri*".