Perhaps you should try some spelling variations:
luat khong » luat thuong, suat thong, luat chung
hanh trinh » canh tranh, hanh chinh
luat thong » luat thuong, suat thong, xuat thong
cong thanh » dong thanh, cong trinh, cong tan
thanh tran » thanh trang, thanh toan, thanh tra
khi xanh » khia canh, thi anh, thi oanh
thi hanh » thi thanh
tran cau » tran chau, toan cau, ran cau

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi ((khi xanh) or (thi hanh)) - hanh trinh ((luat khong) OR (luat thong)) cong thanh tran cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi ((khi xanh) OR (thi hanh)) - hanh trinh ((luat khong) OR (luat thong)) cong thanh tran cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi ((khi xanh) or (thi hanh)) - hanh trinh ((luat khong) OR (luat thong)) cong thanh tran cau".
• Adding a wildcard symbol may retrieve word variants: doi ((khi xanh) or (thi hanh)) - hanh trinh ((luat khong) OR (luat thong)) cong thanh tran cau*.