Perhaps you should try some spelling variations:
chieu quang » hieu quang, thieu quang, chu quang
thanh thong » thanh thuong, thanh hong, thanh thang
thong minh » thong tin, hoang minh
minh luan » minh tuan, binh luan, trinh luan
ho chieu » theo chieu, hoc thieu, mot chieu
va thong » va phuong, he thong, va cong
luan han » luan hoan, luan phan, luan van

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 quang - thanh thong ((va thong) or (va thuong)) thong minh luan han~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu quang - thanh thong ((va thong) OR (va thuong)) thong minh luan han.
• Adding a wildcard symbol may retrieve word variants: ho chieu quang - thanh thong ((va thong) or (va thuong)) thong minh luan han*.