Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu tinh, hieu manh
chieu sang » chieu sach, hieu lang, nhieu tang
thanh luan » tranh luan, thanh xuan, thanh tuan
van nhuong » van chuong, van phuong, van huong
huong manh » hung manh, luong manh, phuong danh
duong manh » duong van
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: theo ((chieu xanh) or (chieu sang)) - thanh luan van nhuong ((huong manh) OR (duong manh)) toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chieu xanh) OR (chieu sang)) - thanh luan van nhuong ((huong manh) OR (duong manh)) toan cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((chieu xanh) or (chieu sang)) - thanh luan van nhuong ((huong manh) OR (duong manh)) toan cao".
• Adding a wildcard symbol may retrieve word variants: theo ((chieu xanh) or (chieu sang)) - thanh luan van nhuong ((huong manh) OR (duong manh)) toan cao*.