Perhaps you should try some spelling variations:
truong thanh » truong trung, truong thpt, truong chung
chieu sang » chieu sach, chieu xanh, hieu lang
thanh tung » thanh cong
quang dung » quang trung, ung dung
cuong dung » tuong duong, ung dung, thong dung
ho chieu » theo chieu, hoc thieu, doi chieu
toan cao » toan tap
toan ban » van ban

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