Perhaps you should try some spelling variations:
cham truc » cau truc, nham thuc, pham thuc
ban thanh » ban hanh
ban hang » ngan hang
tu sach » thu sach, su sach, te sach
hieu ve » hieu va, hieu van
ve cham » va cham, ve chat, vu cham
sach ty » sach y, sach tu, sach thu
ty lang » tay lang, ty xang, ty hang
ha hoi » hoa hoi, xa hoi, va hoi
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 ty lang ((ha hoi) OR (ha noi)). hieu ve cham truc ((ban thanh) or (ban hang)) ly cua vat~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ty lang ((ha hoi) OR (ha noi)). hieu ve cham truc ((ban thanh) OR (ban hang)) ly cua vat*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ty lang ((ha hoi) OR (ha noi)). hieu ve cham truc ((ban thanh) or (ban hang)) ly cua vat*".