Perhaps you should try some spelling variations:
chieu sang » chieu sach, chieu xanh, hieu lang
thanh tung » thanh cong
tung thanh » trung thanh, tang thanh, dung thanh
doi chieu » doc hieu, doi chi, mot chieu
quan dang » quang dang, quan lang, quan dong
gian lang » gian dan
van quan » van ban
quan doi » quan tri, quan li

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 tung thanh ((quan dang) or (gian lang)) van quan doi~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu sang - thanh tung thanh ((quan dang) OR (gian lang)) van quan doi.
• Adding a wildcard symbol may retrieve word variants: doi chieu sang - thanh tung thanh ((quan dang) or (gian lang)) van quan doi*.