Perhaps you should try some spelling variations:
chieu xanh » chieu sang, chieu tinh, hieu manh
chieu sach » chinh sach, chiet tach, chieu sang
truong hoc » trung hoc, tuong ho, truong bo
tranh cai » tranh cac, trinh cai, tranh chap
thuong ho » tuong ho, thuong chi, thuong han
manh toan » thanh toan, anh tuan, tinh toan
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: ho ((chieu xanh) or (chieu sach)) - canh tranh cai ((thuong ho) OR (truong hoc)) manh toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chieu xanh) OR (chieu sach)) - canh tranh cai ((thuong ho) OR (truong hoc)) manh toan cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((chieu xanh) or (chieu sach)) - canh tranh cai ((thuong ho) OR (truong hoc)) manh toan cao".
• Adding a wildcard symbol may retrieve word variants: ho ((chieu xanh) or (chieu sach)) - canh tranh cai ((thuong ho) OR (truong hoc)) manh toan cao*.