Perhaps you should try some spelling variations:
hanh trinh » hanh chinh
chau tinh » cuu tinh, ha tinh, cac tinh
cua tinh » cua sinh, va tinh, ha tinh
ban cong » bang cong, van cong, phan cong
cong dan » cong san, cong tan, huong dan
dan khan » dan khanh, dan chan, dan than
khan cap » khan ap, than cap, khoan cam

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi ((chau tinh) OR (cua tinh)) - ((hanh trinh) or (canh tranh)) cua ban cong dan khan cap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi ((chau tinh) OR (cua tinh)) - ((hanh trinh) OR (canh tranh)) cua ban cong dan khan cap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi ((chau tinh) OR (cua tinh)) - ((hanh trinh) or (canh tranh)) cua ban cong dan khan cap".
• Adding a wildcard symbol may retrieve word variants: doi ((chau tinh) OR (cua tinh)) - ((hanh trinh) or (canh tranh)) cua ban cong dan khan cap*.