Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
chieu xanh » chieu sach, chieu sang, chieu tinh
chau tinh » cuu tinh, ha tinh, cua tinh
trinh va » trinh van, trinh vat, trinh ve
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: doi ((chieu xanh) or (chau tinh)) - hanh trinh va nhung ((cong van) or (cong san)) toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi ((chieu xanh) OR (chau tinh)) - hanh trinh va nhung ((cong van) OR (cong san)) toan cau.
• Adding a wildcard symbol may retrieve word variants: doi ((chieu xanh) or (chau tinh)) - hanh trinh va nhung ((cong van) or (cong san)) toan cau*.