Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
thanh hai » thanh phan, thanh hoa, thanh san
cham tuc » nham thuc, pham thuc, tham thuc
tu sach » thu sach, su sach, te sach
lang xa » lang ha, dang xay, lang van
hieu va » hieu qua
hai cua » thai cua, dai cua, hoi cua
cua tre » cua te, cuu tre, cua triet

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 _ lang xa hoi. ((hieu va) OR (lieu va)) ((cham tuc) or (nam thu)) ban thanh hai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach _ lang xa hoi. ((hieu va) OR (lieu va)) ((cham tuc) OR (nam thu)) ban thanh hai cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach _ lang xa hoi. ((hieu va) OR (lieu va)) ((cham tuc) or (nam thu)) ban thanh hai cua tre".
• Adding a wildcard symbol may retrieve word variants: tu sach _ lang xa hoi. ((hieu va) OR (lieu va)) ((cham tuc) or (nam thu)) ban thanh hai cua tre*.