Perhaps you should try some spelling variations:
theo chinh » thien chinh, te chinh, che chinh
hanh trang » thanh trung, canh tranh, hanh trinh
khong cang » thong cong, hong bang, thong cung
khong dung » thong dung, phuong dung, cuong dung
dan than » dan chan, ban than, van than
than cao » toan cao, thai cao, than cap

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: theo chinh sach - ((hanh trang) or (hanh chinh)) cua ((khong cang) OR (khong dung)) dan than cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chinh sach - ((hanh trang) OR (hanh chinh)) cua ((khong cang) OR (khong dung)) dan than cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo chinh sach - ((hanh trang) or (hanh chinh)) cua ((khong cang) OR (khong dung)) dan than cao".
• Adding a wildcard symbol may retrieve word variants: theo chinh sach - ((hanh trang) or (hanh chinh)) cua ((khong cang) OR (khong dung)) dan than cao*.