Perhaps you should try some spelling variations:
chieu sach » chiet tach, chieu sang, chieu xanh
canh sinh » canh tinh, canh binh, tinh sinh
bang cong » dang cong, bang song, hang cong
dan phan » doan phan, dan chan, dam phan
van phan » van phong, van thanh, luan phan
sinh va » sinh vat, tinh va, dinh van
va bang » va nang, va lang, va ban

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

• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chieu sach) OR (chinh sach)) - canh sinh va bang cong ((dan phan) OR (van phan)) cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((chieu sach) or (chinh sach)) - canh sinh va bang cong ((dan phan) OR (van phan)) cau~".
• Adding a wildcard symbol may retrieve word variants: ho ((chieu sach) or (chinh sach)) - canh sinh va bang cong ((dan phan) OR (van phan)) cau*.