Perhaps you should try some spelling variations:
thanh trung » thanh tung
chieu xanh » chieu sach, chieu sang, chieu tinh
quan thanh » ban thanh
trung vat » trung va, trung van, trong vat
dung cong » dung trong
van thanh » ban thanh, van tuan
ho chieu » theo chieu, hoc thieu, doi chieu
vat dung » van dung, va dung, viet dung

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