Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu xanh
chieu sang » chieu xanh, hieu lang, nhieu tang
cong quang » luong quang, thong quang, duong quang
hanh hang » thanh hang, hang hang, hanh han
thanh cao » thanh ca, thanh cac, thanh thao
song van » hoang van, trong van, duong van

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho ((chieu sach) OR (chieu sang)) - hanh hang va nhung ((song van) or (cong quang)) thanh cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chieu sach) OR (chieu sang)) - hanh hang va nhung ((song van) OR (cong quang)) thanh cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((chieu sach) OR (chieu sang)) - hanh hang va nhung ((song van) or (cong quang)) thanh cao".
• Adding a wildcard symbol may retrieve word variants: ho ((chieu sach) OR (chieu sang)) - hanh hang va nhung ((song van) or (cong quang)) thanh cao*.