Perhaps you should try some spelling variations:
tham thuc » nham thuc, pham thuc, tam thuc
ban thanh » ban hanh, ban hang
sach tay » xach tay, sach hay, sach nay
thanh ly » thanh lay, thanh ky, thanh le
cham tuc » nham thuc, pham thuc, cham soc
tu sach » thu sach, su sach, te sach
hieu ve » hieu va, hieu van
lang ha » long ha
lang xa » dang xay, lang van
ly cua » le 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 tay ((lang xa) or (lang ha)) hoi. hieu ve ((cham tuc) OR (tham thuc)) ban thanh ly cua vat~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach tay ((lang xa) OR (lang ha)) hoi. hieu ve ((cham tuc) OR (tham thuc)) ban thanh ly cua vat.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach tay ((lang xa) or (lang ha)) hoi. hieu ve ((cham tuc) OR (tham thuc)) ban thanh ly cua vat".
• Adding a wildcard symbol may retrieve word variants: tu sach tay ((lang xa) or (lang ha)) hoi. hieu ve ((cham tuc) OR (tham thuc)) ban thanh ly cua vat*.