Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
thanh thu » thanh thuy, thanh tu, khanh thu
cac doanh » cac dan, van doanh, cho doanh
dai doanh » dai danh, dao doanh, doi doanh
doanh thu » doanh tai
cac dang » cao dang, cac dan, cac cong
vien dai » hien dai
le ban » le bang, te ban, lo ban

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

• If you are trying to use Boolean operators, they must be ALL CAPS: (( le ban thanh thu ) OR ((( te ((cac doanh) OR (cac dang)) tai ) OR ( vien dai doanh thu ))))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( le ban thanh thu ) or ((( te ((cac doanh) OR (cac dang)) tai ) or ( vien dai doanh thu ))))~".
• Adding a wildcard symbol may retrieve word variants: (( le ban thanh thu ) or ((( te ((cac doanh) OR (cac dang)) tai ) or ( vien dai doanh thu ))))*.