Perhaps you should try some spelling variations:
thanh trong » thanh trung, tranh trong, hanh trong
chieu xanh » chieu sach, chieu sang, chieu tinh
thien anh » thien danh, tien anh, thien thanh
trong van » trong cac
dong cong » duong cong, dung cong, dang cong
dan toan » dan than, manh toan, xuan toan
van toan » van tuan, van tan, van thanh

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((thien anh) or (chieu xanh)) - thanh trong van dong cong ((dan toan) or (van toan)) cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thien anh) OR (chieu xanh)) - thanh trong van dong cong ((dan toan) OR (van toan)) cao.
• Adding a wildcard symbol may retrieve word variants: hoc ((thien anh) or (chieu xanh)) - thanh trong van dong cong ((dan toan) or (van toan)) cao*.