Perhaps you should try some spelling variations:
doanh thanh » danh thanh, doanh nhan, dinh thanh
trung thanh » truong thanh
nhan dung » chan dung, nhan dang, ngan dung
thanh van » thanh san, thanh toan, thanh phan
yen tinh » tuyen tinh
dan dung » van dung, tin dung, ap dung
van hang » van khang, van hoang, van thang
so yen » so yeu, o yen, su yen

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

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