Perhaps you should try some spelling variations:
ban thanh » ban hang
thu sach » thuat sach, thuoc sach, thu hoach
ban hanh » ban hang
hieu van » hieu va, thien van, lieu va
vai cua » dai cua, hai cua, lai cua
van cao » van dao, van bao, van hao
cao duc » dao duc, cao suc, giao duc
tai san » tai ngan
tu sach » su sach, te sach, tu cach
cua tre » cua te, cuu tre, cua triet
san xa » san va, dan xa, san ha

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: ((thu sach) or (tu sach)) tai san xa hoi. hieu van cao duc ((ban thanh) or (ban hanh)) vai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((thu sach) OR (tu sach)) tai san xa hoi. hieu van cao duc ((ban thanh) OR (ban hanh)) vai cua tre.
• Adding a wildcard symbol may retrieve word variants: ((thu sach) or (tu sach)) tai san xa hoi. hieu van cao duc ((ban thanh) or (ban hanh)) vai cua tre*.