Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, chieu tinh
trinh quan » trinh luat, trinh han
nhung cong » dung cong, thong cong, hang cong
doi chieu » doc hieu, doi chi, ho chieu
manh toan » thanh toan, anh tuan, tinh toan
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: doi chieu xanh - hanh ((trinh quan) OR (tinh quang)) nhung cong ((dan toan) or (manh toan)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu xanh - hanh ((trinh quan) OR (tinh quang)) nhung cong ((dan toan) OR (manh toan)) cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi chieu xanh - hanh ((trinh quan) OR (tinh quang)) nhung cong ((dan toan) or (manh toan)) cau".
• Adding a wildcard symbol may retrieve word variants: doi chieu xanh - hanh ((trinh quan) OR (tinh quang)) nhung cong ((dan toan) or (manh toan)) cau*.