Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
thanh di » thanh doi, thanh de, thanh do
thu sach » thuat sach, thuoc sach, thu hoach
tu sach » su sach, te sach, tu cach
hieu ve » hieu va, hieu van
ky sang » ky nang, ky dang, ky tang
xuc ban » duc ban, cuc ban, quoc ban
ve cam » ve cham, ve cac, va cam
di cua » dai cua, doi cua, de cua
ma hoi » mai hoi, xa hoi, me hoi

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((tu sach) OR (thu sach)) ky sang ((ma hoi) or (ma hoa)). hieu ve cam xuc ban thanh di cua vat~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (thu sach)) ky sang ((ma hoi) OR (ma hoa)). hieu ve cam xuc ban thanh di cua vat*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) OR (thu sach)) ky sang ((ma hoi) or (ma hoa)). hieu ve cam xuc ban thanh di cua vat*".