Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
hanh than » hanh han, hanh nhan, hanh phan
than cua » nhan cua, thai cua, ban cua
ban hanh » ban hang
thu sach » thuat sach, thuoc sach, thu hoach
cay phoi » cap phoi, tay hoi, gap phoi
hieu ve » hieu va, hieu van
cam duc » cam xuc, cao duc, pham duc
duc ban » duc tan, duc van, dua ban
tu sach » su sach, te sach, tu cach
cay cho » cap cho, cao cho, cay co
ve cam » ve cham, ve cac, va cam
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) or (tu sach)) y danh ((cay phoi) OR (cay cho)). hieu ve cam duc ban hanh than cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((thu sach) OR (tu sach)) y danh ((cay phoi) OR (cay cho)). hieu ve cam duc ban hanh than cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((thu sach) or (tu sach)) y danh ((cay phoi) OR (cay cho)). hieu ve cam duc ban hanh than cua triet".
• Adding a wildcard symbol may retrieve word variants: ((thu sach) or (tu sach)) y danh ((cay phoi) OR (cay cho)). hieu ve cam duc ban hanh than cua triet*.