Perhaps you should try some spelling variations:
chieu sang » chieu sach, chieu xanh, hieu lang
thanh dung » thanh duong, thanh tung, thanh hung
doi chieu » doc hieu, doi chi, mot chieu
luc thong » duc thong, luc trong, duc thuong
dung luc » dong luc, dung luan, trung luc
den tuan » den tran, den thanh, doan tuan

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi chieu sang - thanh dung luc thong thong ((den tuan) or (dien hoa)) cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu sang - thanh dung luc thong thong ((den tuan) OR (dien hoa)) cao*.