Perhaps you should try some spelling variations:
thuong cong » thong cong, thuong con, thuong dong
chieu xanh » chieu sach, chieu sang, chieu tinh
doi chieu » doc hieu, doi chi, ho chieu
hanh bang » anh bang, hanh mang, lanh bang
lanh sang » anh sang, lanh bang, doanh sang
cong tan » cong tac, cong san, cong thanh
toan tai » toan tap, doanh tai, toan ban
toan cao » toan ban, toan tap

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 bang) or (lanh sang)) va thuong cong tan ((toan tai) or (toan cao))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu xanh - ((hanh bang) OR (lanh sang)) va thuong cong tan ((toan tai) OR (toan cao)).
• Adding a wildcard symbol may retrieve word variants: doi chieu xanh - ((hanh bang) or (lanh sang)) va thuong cong tan ((toan tai) or (toan cao))*.