Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
chieu tinh » trieu tinh, lieu tinh, chau tinh
hanh dung » thanh dung, anh dung, hanh dong
cua dung » cua dong, qua dung, cua rung
cua dang » cua cong, cua ban
cong san » cong tac
san phan » san pham, van phan, sat phan

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho ((chieu sach) or (chieu tinh)) - hanh dung ((cua dung) OR (cua dang)) cong san phan tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chieu sach) OR (chieu tinh)) - hanh dung ((cua dung) OR (cua dang)) cong san phan tu.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((chieu sach) or (chieu tinh)) - hanh dung ((cua dung) OR (cua dang)) cong san phan tu".
• Adding a wildcard symbol may retrieve word variants: ho ((chieu sach) or (chieu tinh)) - hanh dung ((cua dung) OR (cua dang)) cong san phan tu*.