Perhaps you should try some spelling variations:
ban thanh » ban hang
sach thu » sach thue, sach thieu, sach tham
thu bang » thu ban, thu hang, chu bang
cham duc » pham duc, cham soc, pham duy
ban hanh » ban hang
su sach » so sach, vu sach
bang xa » lang xa, bang va, mang xa
hieu va » lieu va, hieu qua
va cham » va chat, va tham
vai cua » hai cua, lai cua, bai cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sach thu bang xa hoi. hieu va cham duc ((ban thanh) or (ban hanh)) ((vai cua) OR (dai cua)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach thu bang xa hoi. hieu va cham duc ((ban thanh) OR (ban hanh)) ((vai cua) OR (dai cua)) tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach thu bang xa hoi. hieu va cham duc ((ban thanh) or (ban hanh)) ((vai cua) OR (dai cua)) tre".
• Adding a wildcard symbol may retrieve word variants: su sach thu bang xa hoi. hieu va cham duc ((ban thanh) or (ban hanh)) ((vai cua) OR (dai cua)) tre*.