Perhaps you should try some spelling variations:
chiet tach » chieu sach
hanh trinh » canh tranh
ho chiet » ho chieu, ho thiet, hoc thiet
va thong » va thuong, va phuong, he thong
cong dan » cong tan, huong dan, cong dong
cong san » cong tac
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: ho chiet tach - ((hanh trinh) OR (hanh chinh)) va thong ((cong dan) or (cong san)) toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chiet tach - ((hanh trinh) OR (hanh chinh)) va thong ((cong dan) OR (cong san)) toan cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chiet tach - ((hanh trinh) OR (hanh chinh)) va thong ((cong dan) or (cong san)) toan cao".
• Adding a wildcard symbol may retrieve word variants: ho chiet tach - ((hanh trinh) OR (hanh chinh)) va thong ((cong dan) or (cong san)) toan cao*.