Perhaps you should try some spelling variations:
thuong dong » phuong dong, tuong dong, chuong dong
thuong cong » thong cong, thuong con, truong cong
chieu xanh » chieu sach, chieu sang, chieu tinh
doi chieu » doc hieu, doi chi, ho chieu
tranh cua » doanh cua, manh cua
toan cao » toan tap
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 - canh tranh cua ((thuong cong) OR (thuong dong)) dan ((toan cao) or (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu xanh - canh tranh cua ((thuong cong) OR (thuong dong)) dan ((toan cao) OR (toan ban)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi chieu xanh - canh tranh cua ((thuong cong) OR (thuong dong)) dan ((toan cao) or (toan ban))".
• Adding a wildcard symbol may retrieve word variants: doi chieu xanh - canh tranh cua ((thuong cong) OR (thuong dong)) dan ((toan cao) or (toan ban))*.