Perhaps you should try some spelling variations:
luong quang » luong quan, dung quang
chieu sang » chieu sach, chieu xanh, nhieu tang
trung tuan » trung thanh, trung tam, truong thanh
dung luong » dung thuong, dung phuong, dung truong
quang juan » quang tuan, quang uan, quang xuan
hieu lang » hieu quang, nhieu tang, hieu van
tran tuan » tran xuan, tran quang, tran thanh
juan cao » quang cao, toan cao, quan cau

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) OR (hieu lang)) - thanh ((trung tuan) or (tran tuan)) dung luong quang juan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi ((chieu sang) OR (hieu lang)) - thanh ((trung tuan) OR (tran tuan)) dung luong quang juan cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi ((chieu sang) OR (hieu lang)) - thanh ((trung tuan) or (tran tuan)) dung luong quang juan cao".
• Adding a wildcard symbol may retrieve word variants: doi ((chieu sang) OR (hieu lang)) - thanh ((trung tuan) or (tran tuan)) dung luong quang juan cao*.