Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
thu hang » thi hang, thuc hanh, thu huong
thanh ve » hanh ve, thanh va, thanh vien
thu bang » thu ban, chu bang, thu trang
tu sach » thu sach, su sach, te sach
cam tuc » cam xuc, cam tu, nam thuc
tuc ban » thuc ban, truc ban, tu ban
hieu va » hieu qua
ve cua » le cua, de cua, te 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 ((thu hang) or (thu bang)) xa hoi. ((hieu va) or (lieu va)) cam tuc ban thanh ve cua vat~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ((thu hang) OR (thu bang)) xa hoi. ((hieu va) OR (lieu va)) cam tuc ban thanh ve cua vat.
• Adding a wildcard symbol may retrieve word variants: tu sach ((thu hang) or (thu bang)) xa hoi. ((hieu va) or (lieu va)) cam tuc ban thanh ve cua vat*.