Perhaps you should try some spelling variations:
thanh trong » thanh trung, tranh trong, hanh trong
chieu xanh » chieu sach, chieu sang, chieu tinh
trong quan » thong quan, tong quan, thong quang
ho chieu » theo chieu, hoc thieu, doi chieu
quan han » quan hanh, quanh han, quan ha
ban toan » bai toan, ban than, van 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 trong quan han tong ((ban toan) or (van ban)) cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu xanh - thanh trong quan han tong ((ban toan) OR (van ban)) cao.
• Adding a wildcard symbol may retrieve word variants: ho chieu xanh - thanh trong quan han tong ((ban toan) or (van ban)) cao*.