Perhaps you should try some spelling variations:
thong cong » trong cong, tong cong, thong thong
hanh dung » thanh dung, anh dung, hanh dong
cua thong » cua thuong, cua khong, cua tong
chu sang » thu sang, chieu sang, chuc nang
chu bang » thu bang, chuc nang, chu quang
dung cua » dung luan, dung cho
dan toan » van toan, dan than, manh toan

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chu sang) OR (chu bang)) - hanh dung cua thong cong ((dan toan) OR (tinh toan)) cao~.
• Adding a wildcard symbol may retrieve word variants: theo ((chu sang) or (chu bang)) - hanh dung cua thong cong ((dan toan) or (tinh toan)) cao*.