Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
chieu xanh » chieu sach, chieu sang, chieu tinh
cuong bang » muong bang, tuong bang, phuong bang
hieu manh » hieu nganh, dieu hanh, hien hanh
cong bang » dong bang, hong bang, cong lang
trinh va » trinh van, trinh vat, trinh ve
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: hoc ((hieu manh) or (chieu xanh)) - hanh trinh va nhung ((cong bang) OR (cuong bang)) toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hieu manh) OR (chieu xanh)) - hanh trinh va nhung ((cong bang) OR (cuong bang)) toan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((hieu manh) or (chieu xanh)) - hanh trinh va nhung ((cong bang) OR (cuong bang)) toan cau".
• Adding a wildcard symbol may retrieve word variants: hoc ((hieu manh) or (chieu xanh)) - hanh trinh va nhung ((cong bang) OR (cuong bang)) toan cau*.