Perhaps you should try some spelling variations:
chieu quang » hieu quang, thieu quang, chu quang
doanh chung » doanh nhung, doanh thuong, doan hung
dung doanh » dung dan, dung dong
chung cong » nhung cong, chong cong, phung cong
hanh dung » thanh dung, anh dung, hanh dong
cong tinh » cong trinh, cong vinh, long tinh
toan cao » toan ban, toan tap

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 (vu quang)) - hanh dung doanh chung cong tinh toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chieu quang) OR (vu quang)) - hanh dung doanh chung cong tinh toan cao.
• Adding a wildcard symbol may retrieve word variants: ho ((chieu quang) or (vu quang)) - hanh dung doanh chung cong tinh toan cao*.