Perhaps you should try some spelling variations:
doanh doanh » toan doanh, doanh hoan, doanh thanh
doanh cua » doanh luan
cong cong » cong dong, trong cong, dung cong
chi sang » chi lang, chieu sang, chi chang
cong tan » cong tac, cong san, cong thanh
toan tai » toan tap, doanh tai, toan cao
toan ban » van ban
doi chi » doi khi

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi chi sang - doanh doanh cua cong cong tan ((toan tai) or (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chi sang - doanh doanh cua cong cong tan ((toan tai) OR (toan ban)).
• Adding a wildcard symbol may retrieve word variants: doi chi sang - doanh doanh cua cong cong tan ((toan tai) or (toan ban))*.