Perhaps you should try some spelling variations:
trong thanh » truong thanh, trung thanh, rong thanh
doanh hoan » doanh doanh, doanh khoa, doanh nhan
bien tinh » bi tinh, yen tinh, diep tinh
phan dang » phan dau, phan cong, nhan dan
thanh bac » nhanh bac, thanh bai, thanh san
dan dung » van dung, tin dung, ap dung
bac hang » bac thang, ban hang, bach khang
so bien » mot bien

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

• Performing a fuzzy search may retrieve terms with similar spellings: so bien tinh - doanh hoan ((phan dang) or (dan dung)) trong thanh bac hang~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so bien tinh - doanh hoan ((phan dang) OR (dan dung)) trong thanh bac hang.
• Adding a wildcard symbol may retrieve word variants: so bien tinh - doanh hoan ((phan dang) or (dan dung)) trong thanh bac hang*.