Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
nam thuc » nam thuoc, am thuc, nam thu
thanh le » thinh le, thanh ve, thanh de
tu sach » thu sach, su sach, te sach
ty hang » ly hang, thi hang, thu hang
hieu ve » hieu va, hieu van
cam tuc » cam xuc, cam tu, dam thuc
ha hoi » hoa hoi, ha noi, xa hoi
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 hang) OR (ty xang)) ha hoi. hieu ve ((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 hang) OR (ty xang)) ha hoi. hieu ve ((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 hang) OR (ty xang)) ha hoi. hieu ve ((cam tuc) or (nam thuc)) ban thanh le cua vat".
• Adding a wildcard symbol may retrieve word variants: tu sach ((ty hang) OR (ty xang)) ha hoi. hieu ve ((cam tuc) or (nam thuc)) ban thanh le cua vat*.