Perhaps you should try some spelling variations:
chieu sang » chieu sach, chieu xanh, hieu lang
trung quan » truong quan, trong quan, trung tuan
doi chieu » doc hieu, doi chi, ho chieu
trung qua » trong qua, trung cua, truong quan
trong tac » trong cac, tuong tac, trong tan
quan ban » quang ban, qua ban, quan van

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 ((trung qua) or (trung quan)) dung trong tac quan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu sang - thanh ((trung qua) OR (trung quan)) dung trong tac quan ban.
• Adding a wildcard symbol may retrieve word variants: doi chieu sang - thanh ((trung qua) or (trung quan)) dung trong tac quan ban*.