Perhaps you should try some spelling variations:
truong thanh » truong trung, truong thpt, truong chung
chieu sang » chieu sach, chieu xanh, hieu lang
trung tuan » trung thanh, trung tam, tran tuan
dung cong » dung trong
ho chieu » theo chieu, hoc thieu, doi chieu
dan than » dan chan, ban than, dan toan
van than » van thanh, van thang, van tuan

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