Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
thanh hung » thanh huong, thanh trung, thanh cong
thanh tung » thanh cong
ho chieu » theo chieu, hoc thieu, doi chieu
cong van » cong vang, cong san, cong tan
song van » hoang van, trong van, duong van
tuan cao » toan cao, juan cao, quang cao

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 - ((thanh hung) or (thanh tung)) va nhung ((cong van) OR (song van)) tuan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sach - ((thanh hung) OR (thanh tung)) va nhung ((cong van) OR (song van)) tuan cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chieu sach - ((thanh hung) or (thanh tung)) va nhung ((cong van) OR (song van)) tuan cao".
• Adding a wildcard symbol may retrieve word variants: ho chieu sach - ((thanh hung) or (thanh tung)) va nhung ((cong van) OR (song van)) tuan cao*.