Perhaps you should try some spelling variations:
truong thanh » truong trung, truong chung
cua thuong » cua truong, cua phuong, ca thuong
chua xang » chua nang, chuc nang, chu bang
hang hang » nang hang, cang thang, hung thang
chu xanh » chu manh, chieu xanh, chuc danh
hang cua » mang cua, hang ca, huong cua
toan cao » toan ban, toan tap

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo ((chu xanh) or (chua xang)) - hang hang cua thuong ((truong thanh) OR (truong thpt)) toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chu xanh) OR (chua xang)) - hang hang cua thuong ((truong thanh) OR (truong thpt)) toan cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((chu xanh) or (chua xang)) - hang hang cua thuong ((truong thanh) OR (truong thpt)) toan cao".
• Adding a wildcard symbol may retrieve word variants: theo ((chu xanh) or (chua xang)) - hang hang cua thuong ((truong thanh) OR (truong thpt)) toan cao*.