Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, chieu tinh
trinh quan » tinh quang, trinh luat, trinh han
trinh toan » tinh toan, thanh toan, trinh han
dung cong » dung trong
ho chieu » theo chieu, hoc thieu, doi chieu
dan toan » dan than, manh toan, xuan toan
van toan » van tuan, van tan, van thanh

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 xanh - canh ((trinh quan) or (trinh toan)) dung cong ((dan toan) or (van toan)) cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu xanh - canh ((trinh quan) OR (trinh toan)) dung cong ((dan toan) OR (van toan)) cao.
• Adding a wildcard symbol may retrieve word variants: ho chieu xanh - canh ((trinh quan) or (trinh toan)) dung cong ((dan toan) or (van toan)) cao*.