Perhaps you should try some spelling variations:
doanh thanh » danh thanh, doanh nhan, dinh thanh
hoc chieu » hoc thieu, ho chieu, hoc hien
tinh cong » trinh cong, tinh cuong, minh cong
dan thanh » dang thanh, danh thanh, ban thanh
thanh van » thanh san, thanh toan, thanh phan
thanh va » hanh va, thanh ha, than va
cong dan » cong san, cong tan, huong dan
va tinh » may tinh

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((hoc chieu) or (toc thieu)) sang - doanh thanh va tinh cong dan thanh van~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc chieu) OR (toc thieu)) sang - doanh thanh va tinh cong dan thanh van*.