Perhaps you should try some spelling variations:
thanh trong » thanh trung, tranh trong, hanh trong
chieu xanh » chieu sach, chieu tinh, hieu manh
chieu sang » chieu sach, hieu lang, nhieu tang
trong tin » thong tin, trong tan, trong tieng
dung cong » dung trong
cong sach » ong sach, song sach, duong sach
sach toan » hach toan, sach tranh, hoach 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: doc ((chieu xanh) OR (chieu sang)) - thanh trong tin dung cong sach toan ban~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doc ((chieu xanh) OR (chieu sang)) - thanh trong tin dung cong sach toan ban".
• Adding a wildcard symbol may retrieve word variants: doc ((chieu xanh) OR (chieu sang)) - thanh trong tin dung cong sach toan ban*.