Perhaps you should try some spelling variations:
thuong cong » thong cong, thuong con, thuong dong
cua thuong » cua truong, cua phuong, ca thuong
tranh cua » doanh cua, manh cua
chi xanh » chi anh, chi danh, chi hanh
cong san » cong tac
toan cao » toan tap
doi chi » doi khi

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

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