Perhaps you should try some spelling variations:
chieu sach » chiet tach, chieu sang, chieu xanh
khong nang » khong cang, khong ngung, khong dung
thong nang » thong mang, thong quang, thong hoang
chinh sua » chinh su, chinh cua, chinh luan
dang toan » dang tran, dan toan, dung toan
toan cao » toan ban, toan tap

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 (chinh sach)) - hanh chinh sua ((khong nang) OR (thong nang)) dang toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chieu sach) OR (chinh sach)) - hanh chinh sua ((khong nang) OR (thong nang)) dang toan cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((chieu sach) or (chinh sach)) - hanh chinh sua ((khong nang) OR (thong nang)) dang toan cao".
• Adding a wildcard symbol may retrieve word variants: ho ((chieu sach) or (chinh sach)) - hanh chinh sua ((khong nang) OR (thong nang)) dang toan cao*.