Perhaps you should try some spelling variations:
thuong cong » thong cong, thuong con, thuong dong
chiet tach » chieu sach
hanh trinh » canh tranh
cua thuong » cua truong, cua phuong, ca thuong
hoc chiet » hoc thiet, hoc nhiet, hoc hien
cong dan » cong san, cong tan, huong dan
dan than » dan chan, ban than, van than
than ban » thanh ban, toan ban, than man

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc chiet tach - ((hanh trinh) or (hanh chinh)) cua thuong cong dan than ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc chiet tach - ((hanh trinh) OR (hanh chinh)) cua thuong cong dan than ban*.