Perhaps you should try some spelling variations:
van doanh » toan doanh, van dong, van thanh
doanh van » doan van, doanh va, doanh ban
cau treo » cau theo, cau tren, cau triet
suc van » su van, duc van, luc van
cuu tre » cua tre, cau tren
te sach » toc sach
sach ty » sach y, sach tu, sach thu
hieu va » lieu va
xang xa » lang xa, mang xa, ang xa
cao suc » cao su, cao duc

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 ty xang xa hoi. ((hieu va) or (hieu qua)) cao suc van doanh van ((cuu tre) OR (cau treo))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ty xang xa hoi. ((hieu va) OR (hieu qua)) cao suc van doanh van ((cuu tre) OR (cau treo))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ty xang xa hoi. ((hieu va) or (hieu qua)) cao suc van doanh van ((cuu tre) OR (cau treo))*".