Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
quan lang » quan hoang, gian lang, quan luan
ho chieu » theo chieu, hoc thieu, doi chieu
qua mang » cua mang, qua hang, qua nang
cong san » cong tac
san toan » van toan, dan toan, 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: ((ho chieu) or (toc thieu)) xanh - hanh trinh ((qua mang) or (quan lang)) cong san toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chieu) OR (toc thieu)) xanh - hanh trinh ((qua mang) OR (quan lang)) cong san toan cau.
• Adding a wildcard symbol may retrieve word variants: ((ho chieu) or (toc thieu)) xanh - hanh trinh ((qua mang) or (quan lang)) cong san toan cau*.