Perhaps you should try some spelling variations:
chieu sang » chieu sach, chieu xanh, hieu lang
hanh trong » hanh trang, anh trong, hinh trong
trong chuc » trong thuc, trong chu, trong chuan
dong phan » dung phan, cong phan, dong chan
cong nhan » cong nhat, cong thanh, cong san
thanh tap » thanh lap, thanh tai, thanh tay
ho chieu » theo chieu, hoc thieu, mot chieu

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 sang - hanh trong chuc nang ((dong phan) or (cong nhan)) thanh tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sang - hanh trong chuc nang ((dong phan) OR (cong nhan)) thanh tap.
• Adding a wildcard symbol may retrieve word variants: ho chieu sang - hanh trong chuc nang ((dong phan) or (cong nhan)) thanh tap*.