Perhaps you should try some spelling variations:
thanh trong » thanh trung, tranh trong, hanh trong
chieu xanh » chieu sach, chieu sang, chieu tinh
khanh dung » khanh duong, hanh dung, thanh dung
hieu manh » hieu nganh, dieu hanh, hien hanh
trong van » trong cac
van khanh » van thanh, van hanh, van anh
tai toan » bai toan, tap toan, tai tuan
toan ban » van ban

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: doc ((hieu manh) or (chieu xanh)) - thanh trong van khanh dung tai toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc ((hieu manh) OR (chieu xanh)) - thanh trong van khanh dung tai toan ban.
• Adding a wildcard symbol may retrieve word variants: doc ((hieu manh) or (chieu xanh)) - thanh trong van khanh dung tai toan ban*.