Perhaps you should try some spelling variations:
van doanh » toan doanh, van dong, van thanh
thu bang » thu ban, thu hang, chu bang
sach thu » sach thue, sach thieu, sach tham
te sach » toc sach
suc van » su van, duc van, luc van
dan cua » dan ca, ban cua, dai cua
van cua » vang cua, ban cua, nan cua
cao suc » cao su, cao duc
hieu va » lieu va
bang xa » lang xa, bang va, mang xa

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach thu bang xa hoi. ((hieu va) or (hieu qua)) cao suc van doanh ((van cua) OR (dan cua)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach thu bang xa hoi. ((hieu va) OR (hieu qua)) cao suc van doanh ((van cua) OR (dan cua)) tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach thu bang xa hoi. ((hieu va) or (hieu qua)) cao suc van doanh ((van cua) OR (dan cua)) tre*".