Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
chua xang » chua nang, chuc nang, chua dong
chu bang » thu bang, chuc nang, chu quang
trinh he » trinh han, trinh hoa, trinh thi
cong van » cong vang, song van, cong tan
cong san » cong tac
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: theo ((chua xang) or (chu bang)) - hanh trinh he thong ((cong van) or (cong san)) toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chua xang) OR (chu bang)) - hanh trinh he thong ((cong van) OR (cong san)) toan cau.
• Adding a wildcard symbol may retrieve word variants: theo ((chua xang) or (chu bang)) - hanh trinh he thong ((cong van) or (cong san)) toan cau*.