Perhaps you should try some spelling variations:
truong thanh » truong trung, truong thpt, truong chung
chieu xanh » chieu sach, chieu sang, chieu tinh
trung tuan » trung tam, tran tuan
nhung tung » nhung tuong, nhung dung, nhung vung
doi chieu » doc hieu, doi chi, ho chieu
tung dan » dung dan, huong dan, trung dai
dan toan » van toan, dan than, manh toan
toan cau » 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: doi chieu xanh - hanh ((((trung tuan) OR (truong thanh))) or (trung thanh)) nhung tung dan toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu xanh - hanh ((((trung tuan) OR (truong thanh))) OR (trung thanh)) nhung tung dan toan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi chieu xanh - hanh ((((trung tuan) OR (truong thanh))) or (trung thanh)) nhung tung dan toan cau".
• Adding a wildcard symbol may retrieve word variants: doi chieu xanh - hanh ((((trung tuan) OR (truong thanh))) or (trung thanh)) nhung tung dan toan cau*.