Perhaps you should try some spelling variations:
thuong manh » thuong mach, thuong nganh, thuong mai
chieu xanh » chieu sach, chieu tinh, hieu manh
chieu sang » chieu sach, hieu lang, nhieu tang
manh toan » thanh toan, anh tuan, tinh toan
cua tong » cua cong, cua dong, cua song
cua nong » cua cong, cuu nong, cua dong
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: theo ((chieu xanh) OR (chieu sang)) - nhanh quang ((cua tong) or (cua nong)) thuong manh toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chieu xanh) OR (chieu sang)) - nhanh quang ((cua tong) OR (cua nong)) thuong manh toan ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((chieu xanh) OR (chieu sang)) - nhanh quang ((cua tong) or (cua nong)) thuong manh toan ban".
• Adding a wildcard symbol may retrieve word variants: theo ((chieu xanh) OR (chieu sang)) - nhanh quang ((cua tong) or (cua nong)) thuong manh toan ban*.