Perhaps you should try some spelling variations:
chieu sang » chieu sach, chieu xanh, nhieu tang
thanh tinh » thanh binh, nhanh tinh, than kinh
quang dung » quang trung, ung dung, cuong dung
hieu lang » hieu quang, nhieu tang, hieu van
cac nhan » ca nhan, cac nha, cam nhan
nhan tai » hang tai, van tai, toan tai

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho ((hieu lang) OR (chieu sang)) - thanh tinh quang dung trong cac nhan tai~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((hieu lang) OR (chieu sang)) - thanh tinh quang dung trong cac nhan tai".
• Adding a wildcard symbol may retrieve word variants: ho ((hieu lang) OR (chieu sang)) - thanh tinh quang dung trong cac nhan tai*.