Perhaps you should try some spelling variations:
hanh trinh » hanh chinh
thong cong » trong cong, tong cong, thong thong
cua thong » cua thuong, cua khong, cua tong
chao cuu » cham cuu, khao cuu, cap cuu
chao chu » cho chu, cua chu, cao cho
cong dan » cong san, cong tan, huong dan
dan toan » van toan, dan than, manh toan
toan tap » toan ban

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

• If you are trying to use Boolean operators, they must be ALL CAPS: ((chao cuu) OR (chao chu)) van - ((hanh trinh) OR (canh tranh)) cua thong cong dan toan tap~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((chao cuu) OR (chao chu)) van - ((hanh trinh) or (canh tranh)) cua thong cong dan toan tap~".
• Adding a wildcard symbol may retrieve word variants: ((chao cuu) OR (chao chu)) van - ((hanh trinh) or (canh tranh)) cua thong cong dan toan tap*.