Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, chieu tinh
hanh trinh » canh tranh, hanh chinh
chu nang » chuc nang, chua nang, chu bang
cuu nang » chuc nang, cam nang, cuu van
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: theo ((chieu xanh) or (cuu tinh)) - hanh trinh ((chu nang) or (cuu nang)) song tap toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chieu xanh) OR (cuu tinh)) - hanh trinh ((chu nang) OR (cuu nang)) song tap toan cao.
• Adding a wildcard symbol may retrieve word variants: theo ((chieu xanh) or (cuu tinh)) - hanh trinh ((chu nang) or (cuu nang)) song tap toan cao*.