Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
trinh cua » tinh cua, trinh luat, trinh quan
cong sanh » cong danh, cong sach, cong thanh
chi xanh » chi anh, chi hanh, chieu xanh
chi danh » chi dan, chi anh, chi dinh
cua bang » chua bang, cua ban, cua dang
cong san » cong tac
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 ((chi xanh) OR (chi danh)) - hanh trinh cua bang ((cong sanh) or (cong san)) toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi ((chi xanh) OR (chi danh)) - hanh trinh cua bang ((cong sanh) OR (cong san)) toan cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi ((chi xanh) OR (chi danh)) - hanh trinh cua bang ((cong sanh) or (cong san)) toan cao".
• Adding a wildcard symbol may retrieve word variants: doi ((chi xanh) OR (chi danh)) - hanh trinh cua bang ((cong sanh) or (cong san)) toan cao*.