Perhaps you should try some spelling variations:
hanh trang » thanh trung, canh tranh, hanh trinh
luat thong » luat thuong, suat thong, xuat thong
thong cong » trong cong, tong cong, thong thong
tieu xanh » tieu danh, chieu xanh, dieu hanh
hanh tang » anh tang, hanh mang, hanh tung
cong tan » cong tac, cong san, cong thanh
toan ban » van 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: theo tieu xanh - ((hanh tang) OR (hanh trang)) luat thong cong tan ((toan tap) OR (toan ban))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo tieu xanh - ((hanh tang) OR (hanh trang)) luat thong cong tan ((toan tap) or (toan ban))~".
• Adding a wildcard symbol may retrieve word variants: theo tieu xanh - ((hanh tang) OR (hanh trang)) luat thong cong tan ((toan tap) or (toan ban))*.