Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
hanh dong » anh dong, ha dong
dung cong » dung trong
dong cua » dung cua, cong cua, huong cua
cua dung » cua dang, cua dong, qua dung
sat phan » sat nhan, xuat phan, va phan
vat phan » va phan, van phan, viet 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 (trieu tinh)) - hanh dong cua dung cong ((sat phan) OR (vat phan)) tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chieu sach) OR (trieu tinh)) - hanh dong cua dung cong ((sat phan) OR (vat phan)) tu.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((chieu sach) or (trieu tinh)) - hanh dong cua dung cong ((sat phan) OR (vat phan)) tu".
• Adding a wildcard symbol may retrieve word variants: ho ((chieu sach) or (trieu tinh)) - hanh dong cua dung cong ((sat phan) OR (vat phan)) tu*.