Perhaps you should try some spelling variations:
chieu quang » hieu quang, thieu quang, hieu quan
thanh tuong » thanh thuong, thanh tung, thanh huong
dmanh toan » thanh toan, minh toan, manh tuan
chu quang » chat quang, vu quang
manh toan » thanh toan, anh tuan, tinh toan
tuong va » truong va, thuong va, luong va
va thong » va thuong, va phuong, he thong

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) OR (chu quang)) - thanh tuong va thong thong ((dmanh toan) or (manh toan)) ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chieu quang) OR (chu quang)) - thanh tuong va thong thong ((dmanh toan) OR (manh toan)) ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((chieu quang) OR (chu quang)) - thanh tuong va thong thong ((dmanh toan) or (manh toan)) ban".
• Adding a wildcard symbol may retrieve word variants: ho ((chieu quang) OR (chu quang)) - thanh tuong va thong thong ((dmanh toan) or (manh toan)) ban*.