Perhaps you should try some spelling variations:
thanh trung » thanh tung
thanh trong » tranh trong, hanh trong, nhanh trong
chieu xanh » chieu sach, chieu sang, chieu tinh
trong san » trong cac, cong san, dong san
ho chieu » theo chieu, hoc thieu, doi chieu
cac dung » cach dung, cac duong, tac dung
san toan » van toan, dan toan, manh toan
toan cau » toan cao, toan ban, toan tap

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