Perhaps you should try some spelling variations:
doanh thanh » danh thanh, doanh nhan, dinh thanh
thanh nhan » thanh phan, thanh san, thanh toan
nhan dong » nhanh dong, nhan dang, phan dong
dong cong » duong cong, dung cong, dang cong
doc hieu » hoc thieu
cong tan » cong tac, cong san, cong thanh
tan sang » san sang, tan san, van sang
sang ban » hang ban, nang ban, sang bae

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((((doc hieu) or (hoc hien))) or (toc thieu)) xanh - doanh thanh nhan dong cong tan sang ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((((doc hieu) OR (hoc hien))) OR (toc thieu)) xanh - doanh thanh nhan dong cong tan sang ban.
• Adding a wildcard symbol may retrieve word variants: ((((doc hieu) or (hoc hien))) or (toc thieu)) xanh - doanh thanh nhan dong cong tan sang ban*.