Perhaps you should try some spelling variations:
thanh quang » nhanh quang, thanh quan, tranh quang
chieu xanh » chieu sach, chieu sang, chieu tinh
than quang » tran quang, phan quang, thac quang
doi chieu » doc hieu, doi chi, ho chieu
dung cong » dung trong
san phan » san pham, sat phan, dan phan
van phan » van phong, van thanh, luan phan

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 xanh - canh ((thanh quang) OR (than quang)) dung cong ((san phan) or (van phan)) tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu xanh - canh ((thanh quang) OR (than quang)) dung cong ((san phan) OR (van phan)) tu.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi chieu xanh - canh ((thanh quang) OR (than quang)) dung cong ((san phan) or (van phan)) tu".
• Adding a wildcard symbol may retrieve word variants: doi chieu xanh - canh ((thanh quang) OR (than quang)) dung cong ((san phan) or (van phan)) tu*.