Perhaps you should try some spelling variations:
chieu quang » hieu quang, thieu quang, chu quang
thanh thanh » nhanh thanh, thanh toan, thanh phan
thong minh » thong tin, hoang minh
va phuong » va thuong, cac phuong
minh toan » tinh toan, manh toan, minh tuan
ho chieu » theo chieu, hoc thieu, mot chieu
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: ho chieu quang - thanh thanh ((he thong) or (va phuong)) thong minh toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu quang - thanh thanh ((he thong) OR (va phuong)) thong minh toan ban.
• Adding a wildcard symbol may retrieve word variants: ho chieu quang - thanh thanh ((he thong) or (va phuong)) thong minh toan ban*.