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