Perhaps you should try some spelling variations:
thanh trung » thanh tung
thuong cong » thong cong, thuong con, thuong dong
hanh trang » canh tranh, hanh trinh, minh trang
cua thuong » cua truong, cua phuong, ca thuong
hieu xanh » chieu xanh, hieu manh, hieu nganh
doc hieu » toc thieu, hoc thieu, hoc hien
cong dan » cong san, cong tan, huong dan
dan than » dan chan, ban than, van than
than tap » toan tap, han tap, phan tap

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

• Performing a fuzzy search may retrieve terms with similar spellings: doc hieu xanh - ((((hanh trang) OR (thanh trung))) or (hanh chinh)) cua thuong cong dan than tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc hieu xanh - ((((hanh trang) OR (thanh trung))) OR (hanh chinh)) cua thuong cong dan than tap*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doc hieu xanh - ((((hanh trang) OR (thanh trung))) or (hanh chinh)) cua thuong cong dan than tap*".