Perhaps you should try some spelling variations:
chieu sach » chiet tach, chieu sang, chieu xanh
nhung cong » dung cong, thong cong, hang cong
hanh tang » hanh trang, anh tang, hanh tung
hanh mang » nhanh mang, hanh trang, nhanh lang
cua nhung » va nhung
van thanh » ban thanh, van tuan
thanh lap » thanh san, phan lap, thanh hai
cong van » cong vang, cong san, song van

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 tang) or (hanh mang)) cua nhung cong van thanh lap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc ((chieu sach) OR (chinh sach)) - ((hanh tang) OR (hanh mang)) cua nhung cong van thanh lap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doc ((chieu sach) OR (chinh sach)) - ((hanh tang) or (hanh mang)) cua nhung cong van thanh lap".
• Adding a wildcard symbol may retrieve word variants: doc ((chieu sach) OR (chinh sach)) - ((hanh tang) or (hanh mang)) cua nhung cong van thanh lap*.