Perhaps you should try some spelling variations:
chieu quang » hieu quang, thieu quang, chu quang
thanh thang » nhanh thang, thanh thanh, thanh hang
thong minh » thong tin, hoang minh
va phuong » va thuong, cac phuong
ho chieu » theo chieu, hoc thieu, mot chieu
minh van » dinh van, minh va, vinh 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 thang ((he thong) or (va phuong)) thong minh van ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu quang - thanh thang ((he thong) OR (va phuong)) thong minh van ban*.