Perhaps you should try some spelling variations:
hanh trinh » hanh chinh
khong cong » thong cong, khong cang, chong cong
lieu tinh » trieu tinh, diep tinh, bien tinh
cua khong » hua khong, cua phuong, cua thuong
cong dan » cong san, cong tan, huong dan
dan toan » van toan, dan than, 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: du lieu tinh - ((canh tranh) or (hanh trinh)) cua khong cong dan toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: du lieu tinh - ((canh tranh) OR (hanh trinh)) cua khong cong dan toan cau*.