Perhaps you should try some spelling variations:
thanh trung » thanh tung
chieu xanh » chieu sach, chieu sang, chieu tinh
trung chan » trung phan, trong chan, trung can
chan dung » van dung, dan dung
dung cong » dung trong
ho chieu » theo chieu, hoc thieu, doi chieu
tan toan » tap toan, van toan, dan toan

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 - thanh trung chan dung cong ((tan toan) or (tan tran)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu xanh - thanh trung chan dung cong ((tan toan) OR (tan tran)) cau.
• Adding a wildcard symbol may retrieve word variants: ho chieu xanh - thanh trung chan dung cong ((tan toan) or (tan tran)) cau*.