Perhaps you should try some spelling variations:
chua nang » chuc nang, chua xang, cuu nang
ho trieu » mot trieu, 30 trieu, ho chieu
25 trieu » 30 trieu
kha nang » phap nang, ky nang, ki nang
song tap » tong tap, song tam, cuong tap
tap toan » tap doan, tap quan, bai 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 trieu) or (25 trieu)) tinh - canh tranh ((chua nang) OR (kha nang)) song tap toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho trieu) OR (25 trieu)) tinh - canh tranh ((chua nang) OR (kha nang)) song tap toan cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho trieu) or (25 trieu)) tinh - canh tranh ((chua nang) OR (kha nang)) song tap toan cao".
• Adding a wildcard symbol may retrieve word variants: ((ho trieu) or (25 trieu)) tinh - canh tranh ((chua nang) OR (kha nang)) song tap toan cao*.