Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, chieu tinh
hieu quang » thieu quang, hieu quan, hieu qua
hanh dung » thanh dung, anh dung, hanh dong
cua trong » cua truong, cua trung, qua trong
manh toan » thanh toan, anh tuan, tinh toan
dung cua » dung luan, dung cho
dan toan » van toan, dan than, xuan toan

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: theo ((chieu xanh) or (hieu quang)) - hanh dung cua trong cong ((dan toan) OR (manh toan)) tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chieu xanh) OR (hieu quang)) - hanh dung cua trong cong ((dan toan) OR (manh toan)) tap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((chieu xanh) or (hieu quang)) - hanh dung cua trong cong ((dan toan) OR (manh toan)) tap".
• Adding a wildcard symbol may retrieve word variants: theo ((chieu xanh) or (hieu quang)) - hanh dung cua trong cong ((dan toan) OR (manh toan)) tap*.