Perhaps you should try some spelling variations:
chieu sach » chinh sach, chieu sang, chieu xanh
tuong cong » truong cong, trong cong, tong cong
bang luan » tang luan, dung luan, tong luan
hang luan » tang luan, dung luan
cong tac » cong ty
tac doan » tap doan, tan doan, thai doan
doan cao » doanh cao, toan cao, doan cap

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho ((chiet tach) or (chieu sach)) - hanh ((bang luan) OR (hang luan)) tuong cong tac doan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chiet tach) OR (chieu sach)) - hanh ((bang luan) OR (hang luan)) tuong cong tac doan cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((chiet tach) or (chieu sach)) - hanh ((bang luan) OR (hang luan)) tuong cong tac doan cao".
• Adding a wildcard symbol may retrieve word variants: ho ((chiet tach) or (chieu sach)) - hanh ((bang luan) OR (hang luan)) tuong cong tac doan cao*.