Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
trong quan » tong quan, thong quang, luong quan
nhung cong » dung cong, thong cong, hang cong
hieu lang » chieu sang, hieu quang, nhieu tang
cong manh » cong danh, duong manh, cong thanh
manh toan » thanh toan, anh tuan, tinh toan
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: ho ((chieu sach) or (hieu lang)) - thanh ((trong quan) OR (thong quan)) nhung cong manh toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chieu sach) OR (hieu lang)) - thanh ((trong quan) OR (thong quan)) nhung cong manh toan ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((chieu sach) or (hieu lang)) - thanh ((trong quan) OR (thong quan)) nhung cong manh toan ban".
• Adding a wildcard symbol may retrieve word variants: ho ((chieu sach) or (hieu lang)) - thanh ((trong quan) OR (thong quan)) nhung cong manh toan ban*.