Perhaps you should try some spelling variations:
phuong cong » phuong dong, phong cong, phung cong
doi chieu » doc hieu, doi chi, mot chieu
cong bong » cong dong, cong cong, cong nong
bong toan » cong toan, phong toan, trong toan
ho chieu » theo chieu, hoc thieu, mot chieu
toan ban » van ban
cong va » cong ha, cong tac, luong va
dong va » dung va, dong ha, luong va

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((doi chieu) or (ho chieu)) xanh - thanh ((cong va) OR (dong va)) phuong cong bong toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((doi chieu) OR (ho chieu)) xanh - thanh ((cong va) OR (dong va)) phuong cong bong toan ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((doi chieu) or (ho chieu)) xanh - thanh ((cong va) OR (dong va)) phuong cong bong toan ban".
• Adding a wildcard symbol may retrieve word variants: ((doi chieu) or (ho chieu)) xanh - thanh ((cong va) OR (dong va)) phuong cong bong toan ban*.