Perhaps you should try some spelling variations:
thuong cong » thong cong, thuong con, thuong dong
chieu xanh » chieu sach, chieu sang, chieu tinh
hanh tranh » canh tranh, hanh trang, lanh tranh
hanh trinh » canh tranh, hanh chinh
cong thanh » dong thanh, cong trinh, cong tan
doi chieu » doc hieu, doi chi, ho chieu
toan ban » van ban

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

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