Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
xang hoa » hang hoa, nang hoa, hoang hoa
thanh le » thinh le, thanh ve, thanh de
nam thuc » nam thuoc, am thuc, nam thu
hieu van » hieu va, thien van, lieu va
tu sach » thu sach, su sach, te sach
cam tuc » cam xuc, cam tu, dam thuc
sach ty » sach y, sach tu, sach thu
hieu ve » hieu va
hoa hoi » khoa hoi, hoa hoc, hoa doi
le cua » ly cua

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 ty xang hoa hoi. ((hieu ve) or (hieu van)) ((cam tuc) OR (nam thuc)) ban thanh le cua vat~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ty xang hoa hoi. ((hieu ve) OR (hieu van)) ((cam tuc) OR (nam thuc)) ban thanh le cua vat.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ty xang hoa hoi. ((hieu ve) or (hieu van)) ((cam tuc) OR (nam thuc)) ban thanh le cua vat".
• Adding a wildcard symbol may retrieve word variants: tu sach ty xang hoa hoi. ((hieu ve) or (hieu van)) ((cam tuc) OR (nam thuc)) ban thanh le cua vat*.