Perhaps you should try some spelling variations:
luong quang » luong quan, dung quang
chieu sach » chinh sach, chiet tach, chieu sang
truong cao » truong dai
cong quang » thong quang, duong quang, dang quang
doi chieu » doc hieu, doi chi, ho chieu
truong va » truong dai, truong dao, luong va
chat cao » chat co, chat cho, chat bao

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 sach - thanh ((truong va) or (truong cao)) nhung ((cong quang) OR (luong quang)) chat cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu sach - thanh ((truong va) OR (truong cao)) nhung ((cong quang) OR (luong quang)) chat cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi chieu sach - thanh ((truong va) or (truong cao)) nhung ((cong quang) OR (luong quang)) chat cao".
• Adding a wildcard symbol may retrieve word variants: doi chieu sach - thanh ((truong va) or (truong cao)) nhung ((cong quang) OR (luong quang)) chat cao*.