Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
cham luc » cham soc, nhan luc, cham cuu
sang tao » hang tai
tu sach » thu sach, su sach, te sach
vai cua » dai cua, hai cua, bai cua
luc ban » duc ban, cuc ban, luc bat
hieu ve » hieu va, hieu van
ve cham » va cham, ve chat, vu cham
sang ma » tang ma, nang ma, mang may
lai cua » dai cua, hai cua, lai chau

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 y ((sang ma) OR (sang tao)) hoi. hieu ve cham luc ban thanh ((vai cua) or (lai cua)) vat~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach y ((sang ma) OR (sang tao)) hoi. hieu ve cham luc ban thanh ((vai cua) OR (lai cua)) vat.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach y ((sang ma) OR (sang tao)) hoi. hieu ve cham luc ban thanh ((vai cua) or (lai cua)) vat".
• Adding a wildcard symbol may retrieve word variants: tu sach y ((sang ma) OR (sang tao)) hoi. hieu ve cham luc ban thanh ((vai cua) or (lai cua)) vat*.