Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
danh cau » danh dau, danh ca, danh hau
cau phoi » cau hoi, cap phoi, cay phoi
ban hanh » ban hang
than cua » nhan cua, ban cua, gian cua
thai cua » tai cuc, tri cua, dai cua
hieu ve » hieu va, hieu van
ve pham » vi pham, v pham, ve phan
duc ban » duc tan, duc van, dua ban
y danh » ky danh, ly danh, 1 danh

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

• Performing a fuzzy search may retrieve terms with similar spellings: thu sach y danh cau phoi. hieu ve pham duc ban hanh ((than cua) or (thai cua)) triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach y danh cau phoi. hieu ve pham duc ban hanh ((than cua) OR (thai cua)) triet.
• Adding a wildcard symbol may retrieve word variants: thu sach y danh cau phoi. hieu ve pham duc ban hanh ((than cua) or (thai cua)) triet*.