Perhaps you should try some spelling variations:
chieu sach » chiet tach, chieu sang, chieu xanh
chinh quan » chinh luan, chinh quyen, chinh ngan
quan dung » quang dung, quan duong, qua dung
dung cong » dung trong
cong lang » cong vang, cong luong, cong quang
toan cao » toan tap
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: doc ((chieu sach) OR (chinh sach)) - hanh chinh quan dung cong lang ((toan cao) or (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc ((chieu sach) OR (chinh sach)) - hanh chinh quan dung cong lang ((toan cao) OR (toan ban)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "doc ((chieu sach) OR (chinh sach)) - hanh chinh quan dung cong lang ((toan cao) or (toan ban))".
• Adding a wildcard symbol may retrieve word variants: doc ((chieu sach) OR (chinh sach)) - hanh chinh quan dung cong lang ((toan cao) or (toan ban))*.