Perhaps you should try some spelling variations:
phuong thong » phuong trong, thong thong, phuong hoang
chieu xanh » chieu sach, chieu tinh, hieu manh
chieu sang » chieu sach, hieu lang, nhieu tang
khanh luan » khanh thuan, doanh luan, hang luan
van phuong » van phong, va phuong, van chuong
san toan » van toan, dan toan, manh toan
van tan » van tuan, van ban, van tai

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)) - khanh luan van phuong thong ((san toan) or (van tan)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chieu xanh) OR (chieu sang)) - khanh luan van phuong thong ((san toan) OR (van tan)) cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((chieu xanh) OR (chieu sang)) - khanh luan van phuong thong ((san toan) or (van tan)) cau".
• Adding a wildcard symbol may retrieve word variants: theo ((chieu xanh) OR (chieu sang)) - khanh luan van phuong thong ((san toan) or (van tan)) cau*.