Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
doi chinh » do chinh, tai chinh, hoc chinh
trinh vit » trinh viet, trinh vat, trinh vuot
trinh vi » trinh va, trinh ve, trinh viet
cong san » cong tac
san chan » san chang, dan chan, san chay
chan ban » can ban, chat ban, chan nan

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi chinh sach - hanh ((trinh vi) or (trinh vit)) nhung cong san chan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chinh sach - hanh ((trinh vi) OR (trinh vit)) nhung cong san chan ban.
• Adding a wildcard symbol may retrieve word variants: doi chinh sach - hanh ((trinh vi) or (trinh vit)) nhung cong san chan ban*.