Perhaps you should try some spelling variations:
thuong cong » thong cong, thuong con, thuong dong
chieu xanh » chieu sach, chieu sang, chieu tinh
hanh trinh » canh tranh
ho chieu » theo chieu, hoc thieu, doi chieu
cong tap » cuong tap, cong tac, cong tan
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 chieu xanh - ((hanh trinh) or (hanh chinh)) va thuong cong tap toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu xanh - ((hanh trinh) OR (hanh chinh)) va thuong cong tap toan cao.
• Adding a wildcard symbol may retrieve word variants: ho chieu xanh - ((hanh trinh) or (hanh chinh)) va thuong cong tap toan cao*.