Perhaps you should try some spelling variations:
truong thanh » truong trung, truong thpt, truong chung
thanh trung » thanh tung
chieu sang » chieu sach, chieu xanh, hieu lang
quang dung » quang trung, ung dung, cuong dung
doi chieu » doc hieu, doi chi, ho chieu
quan dung » quan duong, qua dung, quan dong
san cao » san co, san cho, san 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 sang - thanh trung ((quan dung) or (quang dung)) truong thanh san cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu sang - thanh trung ((quan dung) OR (quang dung)) truong thanh san cao.
• Adding a wildcard symbol may retrieve word variants: doi chieu sang - thanh trung ((quan dung) or (quang dung)) truong thanh san cao*.