Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
nhung cong » dung cong, thong cong, hang cong
hieu manh » chieu xanh, hieu nganh, dieu hanh
cua nhung » va nhung
cong hach » cong sach, cong thanh, cong khanh
hach toan » thanh toan, manh toan
anh tang » anh bang, anh nang, anh sang
anh dang » anh dong, anh dung, anh bang
toan ban » van ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho ((hieu manh) or (chieu sach)) - ((anh tang) or (anh dang)) cua nhung cong hach toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((hieu manh) OR (chieu sach)) - ((anh tang) OR (anh dang)) cua nhung cong hach toan ban.
• Adding a wildcard symbol may retrieve word variants: ho ((hieu manh) or (chieu sach)) - ((anh tang) or (anh dang)) cua nhung cong hach toan ban*.